这个功能就是一般的文本查找功能，比较实用，记录下来，说不定以后可以用到
DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head><meta charset="utf-8" /><title>string的match用法title><style type="text/css">#searchSubmit{ background-color: orange;width: 200px;text-align: center;padding: 10px;}.found{ background: red;}style>
head>
<body><form id="textsearch"> <textarea id="incoming" cols="100" rows="10">textarea><p>Search pattern: <input id="pattern" type="text" />p>form><p id="searchSubmit">Search for patternp><div id="searchResult">div>
body>
<script type="text/javascript">window.onload = function(){document.getElementById('searchSubmit').onclick = doSearch;}function doSearch(){//获取模式var pattern = document.getElementById('pattern').value;var re = new RegExp(pattern, 'g');//获取字符串var searchString = document.getElementById('incoming').value;//替换var resultString = searchString.replace(re, "$&");//插入到页面
document.getElementById('searchResult').innerHTML = resultString;}
script>
html>