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^[0-9]*$n位的数字：^\d{n}$至少n位的数字：^\d{n,}$m-n位的数字：^\d{m,n}$零和非零开头的数字：^(0|[1-9][0-9]*)$非零开头的最多带两位小数的数字：^([1-9][0-9]*)+(.[0-9]{1,2})?$带1-2位小数的正数或负数：^(\-)?\d+(\.\d{1,2})?$正数、负数、和小数：^(\-|\+)?\d+(\.\d+)?$有两位小数的正实数：^[0-9]+(.[0-9]{2})?$有1~3位小数的正实数：^[0-9]+(.[0-9]{1,3})?$非零的正整数：^[1-9]\d*$ 或 ^([1-9][0-9]*){1,3}$ 或 ^\+?[1-9][0-9]*$非零的负整数：^\-[1-9][]0-9"*$ 或 ^-[1-9]\d*$

非负整数：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding : 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;Wortumbruch: break-word !important;font-size: 16px;overflow-wrap: break-word !important; line-height: 25px;">^d+$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^d+$</span> 或 <span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[1-9]d*|0$</span>^[1-9]d*|0$

🎜

非正整数: <span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px ;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line- height: 25px;">^-[1-9]d*|0$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^-[1-9]d*|0$</span> 或 <span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^((-d+)|(0+))$</span> 或 

<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding : 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;Wortumbruch: break-word !important;font-size: 16px;overflow-wrap: break-word !important; Zeilenhöhe: 25px;">^((-d+)|(0+))$🎜</span>🎜

非负浮点数：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line -height: 25px;">^d+(.d+)?$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^d+(.d+)?$</span> 或 <span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[1-9]d*.d*|0.d*[1-9]d*|0?.0+|0$</span> 或 

<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px; Umriss: 0px;max-width: 100%;box-sizing: border-box !important;Wortumbruch: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height : 25px;">^[1-9]d*.d*|0.d*[1-9]d*|0?.0+|0$🎜</span>🎜

非正浮点数: <span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line -height: 25px;">^((-d+(.d+)?)|(0+(.0+)?))$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^((-d+(.d+)?)|(0+(.0+)?))$</span> 或 <span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^(-([1-9]d*.d*|0.d*[1-9]d*))|0?.0+|0$</span> 或 

<span mp-original-font-size="16" mp-original-line- height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size : 16px;overflow-wrap: break-word !important;line-height: 25px;">^(-([1-9]d*.d*|0.d*[1-9]d*))| 0?.0+|0$🎜</span>🎜

正浮点数: <span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px ;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line- Höhe: 25px;">^[1-9]d*.d*|0.d*[1-9]d*$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[1-9]d*.d*|0.d*[1-9]d*$</span> 或 <span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^(([0-9]+.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*.[0-9]+)|([0-9]*[1-9][0-9]*))$</span> 或 

<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^(([0-9]+.[0-9]*[1-9][0-9]*)|( [0-9]*[1-9][0-9]*.[0-9]+)|([0-9]*[1-9][0-9]*))$🎜 Code>🎜<p mp-original-font-size="17" mp-original-line-height="27" style='margin: 0px 0px 1.2em !important;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;clear: both;min-height: 1em;caret-color: rgb(34, 34, 34);color: rgb(34, 34, 34);font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 17px;font-style: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: 0.544px;text-indent: 0px;text-transform: none;white-space: normal;word-spacing: 0px;-webkit-text-size-adjust: auto;-webkit-text-stroke-width: 0px;text-decoration: none;font-variant-ligatures: normal;orphans: 2;widows: 2;background-color: rgb(255, 255, 255);text-align: left;overflow-wrap: break-word !important;line-height: 27px;'><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;line-height: 25px;"><strong mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;overflow-wrap: break-word !important;font-size: 16px;line-height: 25px;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;overflow-wrap: break-word !important;font-size: 16px;line-height: 25px;">负浮点数</span></strong><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;overflow-wrap: break-word !important;font-size: 16px;line-height: 25px;">：</span></span><code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3 em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: einfarbig; Randfarbe: RGB (234, 234, 234); Hintergrundfarbe: RGB (248, 248, 248); Randradius: 3 Pixel; Anzeige: inline; Zeilenhöhe: 23 Pixel; Boxgröße: Rand box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px ;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line- height: 25px;">^-([1-9]d*.d*|0.d*[1-9]d*)$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^-([1-9]d*.d*|0.d*[1-9]d*)$</span> 或 <span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^(-(([0-9]+.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*.[0-9]+)|([0-9]*[1-9][0-9]*)))$</span> 或 

<span mp-original-font-size="16" mp-original- line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font -size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^(-(([0-9]+.[0-9]*[1-9][0-9 ]*)|([0-9]*[1-9][0-9]*.[0-9]+)|([0-9]*[1-9][0-9]*) ))$🎜</span>🎜

浮点数：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px; Umriss: 0px;max-width: 100%;box-sizing: border-box !important;Wortumbruch: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height : 25px;">^(-?d+)(.d+)?$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^(-?d+)(.d+)?$</span> 或 <span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^-?([1-9]d*.d*|0.d*[1-9]d*|0?.0+|0)$</span> 或 

<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line -height: 25px;">^-?([1-9]d*.d*|0.d*[1-9]d*|0?.0+|0)$🎜</span>🎜

二、校验字符的表达式

汉字：<span mp-original-font-size="16" mp-original-line-height="25 " style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow -wrap: break-word !important;line-height: 25px;">^[u4e00-u9fa5]{0,}$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[u4e00-u9fa5]{0,}$</span>

" em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: einfarbig; Randfarbe: RGB (234, 234, 234); Hintergrundfarbe: RGB (248, 248, 248); Randradius: 3 Pixel; Anzeige: inline; Zeilenhöhe: 23 Pixel; Boxgröße: Rand box !important;overflow-wrap: break-word !important;">^[A-Za-z0-9]+$

 或 <span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding : 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;Wortumbruch: break-word !important;font-size: 16px;overflow-wrap: break-word !important; Zeilenhöhe: 25px;">^[A-Za-z0-9]{4,40}$<strong mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;overflow-wrap: break-word !important;font-size: 16px;line-height: 25px;"></strong></span>

长度为3-20的所有字符：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^.{3,20}$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^.{3,20}$</span>

由26个英文字母组成的字符串：<span mp-original-font-size="16" mp-original-line-height="25" style="margin : 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break- Wort !important;line-height: 25px;">^[A-Za-z]+$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[A-Za-z]+$</span>

Eine Zeichenfolge bestehend aus 26 englischen Großbuchstaben: <span mp-original-font-size="16" mp-original-line-height="25" style=" margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[A-Z]+$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[A-Z]+$</span>

Durchsuchen Sie außerdem den Java-Backend-Stack des offiziellen Kontos und antworten Sie auf „Privatarbeit“, um ein Überraschungsgeschenkpaket zu erhalten.

由26个小写英文字母组成的字符串：<span mp-original-font-size="16" mp-original-line-height="25" style=" Rand: 0px;Padding: 0px;Umriss: 0px;maximale Breite: 100%;Boxgröße: Rahmenbox !important;Zeilenumbruch: Wortumbruch !important;Schriftgröße: 16px;Überlaufumbruch: Pause -word !important;line-height: 25px;">^[a-z]+$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[a-z]+$</span>

由数字和26个英文字母组成的字符串：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[A-Za-z0-9]+$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[A-Za-z0-9]+$</span>

由数字、26个英文字母或者下划线组成的字符串：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow- wrap: break-word !important;line-height: 25px;">^w+$ 或 ^w{3,20}<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^w+$ 或 ^w{3,20}</span>

中文、英文、数字包括下划线：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px ;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word ! important;line-height: 25px;">^[u4E00-u9FA5A-Za-z0-9_]+$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[u4E00-u9FA5A-Za-z0-9_]+$</span>

中文、英文、数字但不包括下划线等符号：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[u4E00-u9FA5A-Za-z0-9]+$<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[u4E00-u9FA5A-Za-z0-9]+$</span> 或 <span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[u4E00-u9FA5A-Za-z0-9]{2,20}$</span> 或 

<span mp-original-font-size="16" mp-original-line-height=" 25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px; overflow-wrap: break-word !important;line-height: 25px;">^[u4E00-u9FA5A-Za-z0-9]{2,20}$🎜</span>🎜

可以输入含有<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px ;">^%&',;=?$"<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^%&',;=?$"</span> 等字符：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">[^%&',;=?$x22]+</span>[^%&',;=?$x22]+

🎜

禁止输入含有~的字符 <code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">[^~x22]+</span>[^~x22]+

🎜

其它

.*匹配除 \n 以外的任何字符。/[\u4E00-\u9FA5]/ 汉字/[\uFF00-\uFFFF]/ 全角符号/[\u0000-\u00FF]/ 半角符号

三、特殊需求表达式

Email 地址：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$</span>

[a-zA-Z0-9][-a-zA-Z0-9]{0,62}(/.[a-zA-Z0-9][-a-zA-Z0-9]{0,62})+/.?

[a-zA-z]+://[^\s]* 或 ^http://([\w-]+\.)+[\w-]+(/[\w-./?%&=]*)?$

^(13[0-9]|14[5|7]|15[0|1|2|3|5|6|7|8|9]|18[0|1|2|3|5|6|7|8|9])\d{8}$

电话号码(“XXX-XXXXXXX”、”XXXX-XXXXXXXX”、”XXX-XXXXXXX”、”XXX-XXXXXXXX”、”XXXXXXX”和”XXXXXXXX)：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^(\(\d{3,4}-)|\d{3.4}-)?\d{7,8}$</span>

国内电话号码(0511-4405222、021-87888822)：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">\d{3}-\d{8}|\d{4}-\d{7}</span>

身份证号(15位、18位数字)：<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^d{15}|d{18}$</span>^d{15}|d{18}$

🎜

短身份证号码(数字、字母x结尾)：<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^([0-9]){7,18}(x|X)?</span>$ 或 <span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^d{8,18}|[0-9x]{8,18}|[0-9X]{8,18}?$</span>^([0-9]){7,18}(x|X)?

🎜$ 或 🎜 🎜^d{8,18}|[0-9x]{8,18}|[0-9X]{8,18}?$🎜🎜

Ist das Konto legal (beginnend mit einem Buchstaben, 5–16 Bytes zulässig, alphanumerische Unterstriche zulässig): <code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[a-zA-Z][a-zA-Z0-9_]{4,15}$</span>

密码(以字母开头，长度在6~18之间，只能包含字母、数字和下划线)：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[a-zA-Z]w{5,17}$</span>^[a-zA-Z][a-zA-Z0-9_]{4,15} $

🎜🎜🎜Passwort (beginnend mit einem Buchstaben, Länge zwischen 6 und 18, kann nur Buchstaben, Zahlen und Unterstriche enthalten): 🎜🎜^[a-zA-Z]w{5,17 }$🎜🎜

Starkes Passwort (muss eine Kombination aus Groß- und Kleinbuchstaben und Zahlen enthalten, keine Sonderzeichen, Länge zwischen 8 und 10): <code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^(?=.*d)(?=.*[a-z])(?=.*[A-Z]).{8,10}$</span>

日期格式：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^d{4}-d{1,2}-d{1,2}</span>^(?=.*d)(?=.*[a-z] ) (?=.*[A-Z]).{8,10}$

🎜🎜🎜Datumsformat: 🎜🎜^d{4}-d{1,2}-d{1, 2 }🎜🎜

一年的12个月(01～09和1～12)：<code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^(0?[1-9]|1[0-2])$</span>

一个月的31天(01～09和1～31)：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^((0?[1-9])|((1|2)[0-9])|30|31)$</span>^(0?[1-9]|1[0-2])$

🎜🎜🎜一个31 Seiten (01–09 1–31): 🎜🎜^((0?[1-9])|((1|2)[0-9])|30|31)$🎜 🎜

Geldeingabeformat

Es gibt vier Gelddarstellungen, die wir akzeptieren können: „10.000,00“ und „10.000,00“ sowie „10.000“ und „10.000“ ohne „Cent“: <code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[1-9][0-9]*$</span>^[1- 9][0 -9]*$

🎜

Damit ist jede Zahl gemeint, die nicht mit 0 beginnt. Allerdings bedeutet es auch, dass kein Zeichen „0“ übergeben wird, daher verwenden wir die folgende Form: <code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^(0|[1-9][0-9]*)$</span>

一个0或者一个不以0开头的数字.我们还可以允许开头有一个负号：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^(0|-?[1-9][0-9]*)$</span>^(0|[1-9][ 0 -9]*)$

🎜🎜🎜Eine 0 oder eine Zahl, die nicht mit 0 beginnt. Wir können auch ein negatives Vorzeichen am Anfang zulassen: 🎜🎜^(0|-?[ 1-9 ][0-9]*)$🎜🎜

4. Dies bedeutet eine 0 oder eine Zahl, die negativ sein kann und nicht mit 0 beginnt. Lassen Sie den Benutzer mit 0 beginnen. Entfernen Sie auch das negative Vorzeichen, da Geld niemals negativ sein kann. Wir werden als nächstes hinzufügen Dezimalteil: <code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[0-9]+(.[0-9]+)?$</span>

必须说明的是,小数点后面至少应该有1位数，所以”10.”是不通过的,但是 “10” 和 “10.2” 是通过的：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[0-9]+(.[0-9]{2})?$</span>^[0-9]+(.[0-9]+)?$

🎜🎜🎜Es ist zu beachten, dass mindestens 1 Nachkommastelle stehen sollte Zahl, also wird nicht „10“ übergeben, sondern „10“ und „10.2“: 🎜🎜^[0-9]+(.[0-9]{2})?$🎜 Code>🎜<p mp-original-font-size="17" mp-original-line-height="27" style='margin: 0px 0px 1.2em !important;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;clear: both;min-height: 1em;caret-color: rgb(34, 34, 34);color: rgb(34, 34, 34);font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 17px;font-style: normal;font-variant-caps: normal;font-weight: 400;letter-spacing: 0.544px;text-align: justify;text-indent: 0px;text-transform: none;white-space: normal;word-spacing: 0px;-webkit-text-size-adjust: auto;-webkit-text-stroke-width: 0px;text-decoration: none;font-variant-ligatures: normal;orphans: 2;widows: 2;background-color: rgb(255, 255, 255);overflow-wrap: break-word !important;line-height: 27px;'><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">Auf diese Weise legen wir fest, dass nach dem Komma zwei Nachkommastellen stehen müssen. Wenn Sie der Meinung sind, dass es zu hart ist, können Sie Folgendes tun: </span><code mp-original-font-size="14.449999809265137" mp-original- line-height="23" style=" margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrapping; border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border- Radius: 3px;display: inline;line- height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[0-9]+(.[0-9]{1,2})?$</span>^[0-9]+(.[0-9 ]{1,2})?$

🎜

Dadurch kann der Benutzer nur eine Dezimalstelle schreiben. Als nächstes sollten wir die Zahl betrachten <code mp-original-font-size="14.449999809265137" mp-original-line-height="23" style="margin: 0px 0.15em;padding: 0px 0.3em;outline: 0px;max-width: 100%;font-size: 14.45px;font-family: Consolas, Inconsolata, Courier, monospace;white-space: pre-wrap;border-width: 1px;border-style: solid;border-color: rgb(234, 234, 234);background-color: rgb(248, 248, 248);border-radius: 3px;display: inline;line-height: 23px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">逗号</span> 了，我们可以这样：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^[0-9]{1,3}(,[0-9]{3})*(.[0-9]{1,2})?$</span>comma

🎜 Jetzt können wir Folgendes tun: 🎜🎜^[0-9]{ 1 ,3}(,[0-9]{3})*(.[0-9]{1,2})?$🎜🎜

1到3个数字,后面跟着任意个 逗号+3个数字，逗号成为可选，而不是必须：<span mp-original-font-size="16" mp-original-line-height="25" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 25px;">^([0-9]+|[0-9]{1,3}(,[0-9]{3})*)(.[0-9]{1,2})?$</span>

备注：这就是最终结果了,别忘了+可以用*替代如果你觉得空字符串也可以接受的话(奇怪,为什么?)最后,别忘了在用函数时去掉去掉那个反

xml文件：^([a-zA-Z]+-?)+[a-zA-Z0-9]+\.[x|X][m|M][l|L]$

中文字符的正则表达式：[\u4e00-\u9fa5]

Doppelbyte-Zeichen: ^x00-xff)

Regulärer Ausdruck für Leerzeilen: ns*r (kann zum Löschen von Leerzeilen verwendet werden)

Regulärer Ausdruck für HTML-Tags: 5ca7d64be956bbf5d7ebe5969acfc72e]>.?0a914b8e8cea82ac76ea0d3084794b8a|acd573ecd213746fc3682b47ecb91d45 verschachtelte Tags )

Regulärer Ausdruck für Leerzeichen am Anfang und Ende der Zeile: ^s|s

) (kann zum Löschen von Leerzeichen am Anfang und Ende der Zeile (einschließlich Leerzeichen, Tabulatoren, Formulare) verwendet werden Feeds usw.), sehr nützlicher Ausdruck)

Tencent QQ-Nummer: [1-9][0-9]{4,} (Tencent QQ-Nummer beginnt bei 10000)

China-Postleitzahl: [1-9]d{5}(?!d) (Chinas Postleitzahl ist 6-stellig)

IP-Adresse: d+.d+.d+.d+ (nützlich beim Extrahieren der IP-Adresse)

IP地址：((?:(?:25[0-5]|2[0-4]\d|[01]?\d?\d)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d?\d))

牛逼啊！接私活必备的 N 个开源项目！赶快收藏吧

IP-v4地址：\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b (提取IP地址时有用)

校验IP-v6地址:

(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))

子网掩码：

((?:(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d)\\.){3}(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d))

校验日期:

^(?:(?!0000)[0-9]{4}-(?:(?:0[1-9]|1[0-2])-(?:0[1-9]|1[0-9]|2[0-8])|(?:0[13-9]|1[0-2])-(?:29|30)|(?:0[13578]|1[02])-31)|(?:[0-9]{2}(?:0[48]|[2468][048]|[13579][26])|(?:0[48]|[2468][048]|[13579][26])00)-02-29)$(“yyyy-mm-dd“ 格式的日期校验，已考虑平闰年。)

抽取注释：<span mp-original-font-size="16" mp-original-line-height="28" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 28px;">323fb0f7fe6aafe3a77b6c8f8c2d39b1</span>

查找CSS属性:<span mp-original-font-size="16" mp-original-line-height="28" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 28px;">^\\s*[a-zA-Z\\-]+\\s*[:]{1}\\s[a-zA-Z0-9\\s.#]+[;]{1}</span>

提取页面超链接:<code mp-original-font-size="14" mp-original-line-height="24" style='margin: 0px 2px;padding: 2px 4px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 14px;border-top-left-radius: 4px;border-top-right-radius: 4px;border-bottom-right-radius: 4px;border-bottom-left-radius: 4px;background-color: rgba(27, 31, 35, 0.0470588);font-family: "Operator Mono", Consolas, Monaco, Menlo, monospace;word-break: break-all;color: rgb(255, 93, 108);overflow-wrap: break-word !important;line-height: 24px;'><span mp-original-font-size="16" mp-original-line-height="28" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 28px;">(c5164c5c70fe0a14bfac53562612b0bb]*)(href="https?:\/\/)((?!(?:(?:www\.)?'.implode('|(?:www\.)?', $follow_list).'))[^" rel="external nofollow" ]+)"((?!.*\brel=)[^>]*)(?:[^>]*)></span>

提取网页图片:<span mp-original-font-size="16" mp-original-line-height="28" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 28px;">\4149ef2c5c1bbd6c0eddd0dcbf81a298]*[src] *= *[\"\']{0,1}([^\"\'\ >]*)</span>(65b02723614ff7d614d3a682f5d477b2]*)(href="https?:\/\/)((?!(?:(?:www\.)?'.implode('|(? :www\.)?', $follow_list).'))[^" rel="external nofollow" ]+)"((?!.*\brel=)[^>]*)(?:[^ >]*)>

🎜🎜🎜提取网页图片:🎜🎜\21a9f2105e48b750c443442baf568f72]*[src] *= *[\"\']{0,1}([^\"\'\ >]*)🎜🎜

Durchsuchen Sie außerdem das offizielle Konto GitHub Ape Backstage und antworten Sie auf „Geld verdienen“, um ein Überraschungsgeschenkpaket zu erhalten.

Farbcode der Webseite extrahieren:<code mp-original-font-size="14" mp-original-line-height="24" style='margin: 0px 2px;padding: 2px 4px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 14px;border-top-left-radius: 4px;border-top-right-radius: 4px;border-bottom-right-radius: 4px;border-bottom-left-radius: 4px;background-color: rgba(27, 31, 35, 0.0470588);font-family: "Operator Mono", Consolas, Monaco, Menlo, monospace;word-break: break-all;color: rgb(255, 93, 108);overflow-wrap: break-word !important;line-height: 24px;'><span mp-original-font-size="16" mp-original-line-height="28" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 28px;">^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$</span>^#([A - Fa-f0-9]{6}|[A-Fa-f0-9]{3})$

🎜

文件扩展名效验:<code mp-original-font-size="14" mp-original-line-height="24" style='margin: 0px 2px;padding: 2px 4px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 14px;border-top-left-radius: 4px;border-top-right-radius: 4px;border-bottom-right-radius: 4px;border-bottom-left-radius: 4px;background-color: rgba(27, 31, 35, 0.0470588);font-family: "Operator Mono", Consolas, Monaco, Menlo, monospace;word-break: break-all;color: rgb(255, 93, 108);overflow-wrap: break-word !important;line-height: 24px;'><span mp-original-font-size="16" mp-original-line-height="28" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 28px;">^([a-zA-Z]\:|\)\([^\]+\)*[^\/:*?"a8093152e673feb7aba1828c43532094|]+\.txt(l)?$</span>

判断IE版本：<span mp-original-font-size="16" mp-original-line-height="28" style="margin: 0px;padding: 0px;outline: 0px;max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;font-size: 16px;overflow-wrap: break-word !important;line-height: 28px;">^.*MSIE [5-8](?:\.[0-9]+)?(?!.*Trident\/[5-9]\.0).*$</span>^([a-zA-Z ]\:|\\)\\([^\\]+\\)*[^\/:*?"a8093152e673feb7aba1828c43532094|]+\.txt(l)?$

🎜🎜 🎜判断IE版本:🎜🎜^.*MSIE [5-8]( ?:\.[0-9]+)?(?!.*Trident\/[5-9]\.0).*$🎜🎜

Anhang:

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