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HomeBackend DevelopmentPHP TutorialCollection of commonly used regular expression examples_regular expression

文章主要介绍了常用的正则表达式实例整理,非常不错,具有参考借鉴价值,需要的朋友可以参考下

收集在业务中经常使用的正则表达式实例,方便以后进行查找,减少工作量。

1. 校验基本日期格式

var  reg1 = /^\d{4}(\-|\/|\.)\d{1,2}\1\d{1,2}$/;
var  reg2 = /^(^(\d{4}|\d{2})(\-|\/|\.)\d{1,2}\3\d{1,2}$)|(^\d{4}年\d{1,2}月\d{1,2}日$)$/;

2. 校验密码强度

密码的强度必须是包含大小写字母和数字的组合,不能使用特殊字符,长度在8-10之间。

var  reg = /^(?=.*\\d)(?=.*[a-z])(?=.*[A-Z]).{8,10}$/;

3. 校验中文字符串仅能是中文。

var  reg = /^[\\u4e00-\\u9fa5]{0,}$/;

4. 由数字、26个英文字母或下划线组成的字符串

var reg = /^\\w+$/;

5. 校验E-Mail 地址   同密码一样,下面是E-mail地址合规性的正则检查语句。

var  reg = 
/[\\w!#$%&'*+/=?^_`{|}~-]+(?:\\.[\\w!#$%&'*+/=?^_`{|}~-]+)*@(?:[\\w](?:[\\w-]*[\\w])?\\.)+[\\w](?:[\\w-]*[\\w])?/;

6. 校验身份证号码

下面是身份证号码的正则校验。15 或 18位。

15位: var reg = /^[1-9]\\d{7}((0\\d)|(1[0-2]))(([0|1|2]\\d)|3[0-1])\\d{3}$/;
18位:var  reg = /^[1-9]\\d{5}[1-9]\\d{3}((0\\d)|(1[0-2]))(([0|1|2]\\d)|3[0-1])\\d{3}([0-9]|X)$/;

7. 校验日期 “yyyy-mm-dd” 格式的日期校验,已考虑平闰年。

var reg = 
/^(?:(?!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)$/;

8. 校验金额金额校验,精确到2位小数。

var  reg = /^[0-9]+(.[0-9]{2})?$/;

9. 校验手机号

下面是国内 13、15、18开头的手机号正则表达式。(可根据目前国内收集号扩展前两位开头号码)

var reg = /^(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}$/;

10. 判断IE的版本IE目前还没被完全取代,很多页面还是需要做版本兼容,下面是IE版本检查的表达式。

var  reg = /^.*MSIE [5-8](?:\\.[0-9]+)?(?!.*Trident\\\/[5-9]\\.0).*$/;

11. 校验IP-v4地址

var  reg = 
/\\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/;

12. 校验IP-v6地址

var reg = 
/(([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]))/
;

13. 检查URL的前缀

应用开发中很多时候需要区分请求是HTTPS还是HTTP,通过下面的表达式可以取出一个url的前缀然后再逻辑判断。

if
 (!s.match(
/^[a-zA-Z]+:\/\//
)) {
  s = 
'http://'
 + s;
}

14. 提取URL链接

下面的这个表达式可以筛选出一段文本中的URL。

var reg = /^(f|ht){1}(tp|tps):\/\/([\w-]+\.)+[\w-]+(\/[\w- ./?%&=]*)?/;

15. 文件路径及扩展名校验

验证 windows下文件路径和扩展名(下面的例子中为.txt文件)

var reg = /^([a-zA-Z]\\:|\\\\)\\\\([^\\]+\\)*[^\\/:*?"<>|]+\\.txt(l)?$/;

16. 提取Color Hex Codes

有时需要抽取网页中的颜色代码,可以使用下面的表达式。

var  reg = /^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$/;

17. 提取网页图片假若你想提取网页中所有图片信息,可以利用下面的表达式。

var reg = /\\]*[src] *= *[\\"\']{0,1}([^\\"\'\ >]*)/;

18. 提取页面超链接 提取html中的超链接。

var reg = 
/(<a\\s*(?!.*\\brel=)[^>]*)(href="https?:\/\/)((?!(?:(?:www\\.)?&#39;.implode(&#39;|(?:www\\.)?&#39;, $follow_list).&#39;))[^" rel="external nofollow" ]+)"((?!.*\\brel=)[^>]*)(?:[^>]*)>/;

19. 查找CSS属性

通过下面的表达式,可以搜索到相匹配的CSS属性。

var reg = /^\\s*[a-zA-Z\\-]+\\s*[:]{1}\\s[a-zA-Z0-9\\s.#]+[;]{1}/;

20. 抽取注释

如果你需要移除HMTL中的注释,可以使用如下的表达式。

var reg = /<!--(.*?)-->/;

相关推荐:

两种JS实现密码强度的正则表达式方法

JS原生对象和正则表达式详解

JavaScript正则表达式小技巧

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