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js regular search match() and replace() usage examples

高洛峰
高洛峰Original
2017-01-22 14:04:011323browse

The example of this article describes the usage of regular search match() and replacement replace() in js. Share it with everyone for your reference. The details are as follows: 

<html>
<head>
<script type="text/javascript">
//string.match(正则)：正则查找字符串，返回符合正则的字符或字符串
function t1(){
 var con = document.getElementsByName(&#39;content&#39;)[0].value;//需要查找的内容
 var reg = /\Bhi\B/g;//匹配中间有hi的单词。g为模式增强符，表示全局匹配
 alert(con.match(reg));
}
//string.replace(正则，用什么替换)：返回被替换后的string
function t2(){
 var con = document.getElementsByName(&#39;content&#39;)[0].value;//需要查找的内容
 var reg = /<script.*<\/script>/;//把javascript代码替换为空
 alert(con.replace(reg,&#39;&#39;));
}
</script>
</head>
<body>
<textarea rows="5" cols="30" name="content"></textarea><br />
<button onclick="t1();">正则查找字符串match()</button><br />
<button onclick="t2();">正则查找字符串replace()</button><br />
</body>
</html>

I hope this article will be helpful to everyone’s regular expression learning.

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