jquery highlight官网：https://bartaz.github.io/sandbox.js/jquery.highlight.html
该插件可以方便的进行高亮处理。
示例：
<!DOCTYPE html>
<html>
<head>
<title>regex.html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="../jquery/jquery-1.11/jquery.min.js"></script>
<script type="text/javascript" src="../jquery/jquery-highlight/jquery-hightlight.js"></script>
<style>
.highlight {background-color: #FFFF88; }
</style>
<script>
$(function(){
$('#search').click(function(){
var key = $('#key').val();
if(key.length > 0) {
var body = $('#body');
body.removeHighlight();
body.highlight(key);
} else {
alert("请输入关键字！")
}
});
});
</script>
</head>
<body>
<div>
<input id="key" type="text">
<input id="search" type="button" value="搜索">
</div>
<div id="head">
This is a test head!
<div>
input the search key.
</div>
<div>
click "搜索" button.
</div>
</div>
<h1>如下是搜索区域!</h1>
<div id="body">
This is a test body!
<div>
This is a test, a test, test, tes, te, t!
Do you know and listen this test, I think you don't know this test!
</div>
<div>
这是一个简答的测试,测试.
<p>你知道或者听过这个测试吗，我认为你没有听过这个测试！</p>
</div>
<div>
This is a test, a test, test, tes, te, t!
I know't know this test, yes, this test is a not famous test!
<p>Follow me test, to test the test! I don't know what do you say?</p>
</div>
<div>
<div>
这是一个简答的测试,测试.
我不知道这个测试，是的，这不是一个注明的测试，
<span>跟随我，去测试这个测试，我都不知道我在说什么！</span>
</div>
</div>
<div>
What do you say? test, only a test?
<p>你们说什么呢？测试，一个测试？</p>
</div>
</div>
</body>
</html>