<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<meta http-equiv="content-type"
content="text/html";charset="gbk"/>
<script type="text/javascript"
>
var str="beijing
is not a big city";
var index=str.search(/jing/i);
alert(index);
3
var index=str.replace(/jing/i,"hai");
alert(index);
beihai is not a big
city
var str="1+3=4";
var t = str.match(/\d+/g);
alert(t); 1,3,4
alert("1,2,3".split(",")); 1,2,3
alert("1,2,3".split(/,/)); 1,2,3
</script>
</head>
<body>
</body>
</html>
原文：http://www.cnblogs.com/lowbrid/p/3557048.html