通过正则匹配出js代码片段

希望通过js来匹配出网页中的js代码段，包含<script ....>，只匹配出自己写的js代码不要<script type="text/javascript" src="source/jquery.qtip.min.js"></script>
这种形式的var s ='<script type="text/javascript" src="image/plupload/plupload.js"></script><script type="text/javascript" src="image/plupload/plupload.flash.js"></script><script type="text/javascript" src="image/plupload/plupload.html4.js"></script><script type="text/javascript" src="image/plupload/plupload.html5.js"></script><script type="text/javascript">alert("test");</script>'
p = /<(script)\s+((language=['"]?javascript['"]?)|(type=['"]?text\/javascript['"]?))?\s*\/?>.*(?:<\/\1>)?/gi;
    var arr = new Array();
    while(arr = p.exec(s))
alert(arr[1]+','+arr[1]+','+arr[2]);
我希望输出<script type="text/javascript">alert("test");</script>
但是这个正则有问题   老是不能输出正确结果呢

解决方案 »

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var s ='<script type="text/javascript" src="image/plupload/plupload.js"></script><script type="text/javascript" src="image/plupload/plupload.flash.js"></script><script type="text/javascript" src="image/plupload/plupload.html4.js"></script><script type="text/javascript" src="image/plupload/plupload.html5.js"></script><script type="text/javascript">alert("test");</script>'这个字符串有问题，脚本中不能包含'</script>'，可以用'</scr' + 'ipt>'替换
var str ='<script type="text/javascript" src="image/plupload/plupload.js"><\/script><script type="text/javascript" src="image/plupload/plupload.flash.js"><\/script><script type="text/javascript" src="image/plupload/plupload.html4.js"><\/script><script type="text/javascript" src="image/plupload/plupload.html5.js"><\/script><script type="text/javascript">alert("test");<\/script>',
reg = /<script\b[^<>]*>[^<>]+<\/script>/g;
alert(str.match(reg));
要点：
1.排除有src属性的
2.启用多行模式
var s ="<scr"+"ipt type=\"text/javascript\" src=\"image/plupload/plupload.js\"></scr"+"ipt><scr"+"ipt type=\"text/javascript\" src=\"image/plupload/plupload.flash.js\"></scr"+"ipt><scr"+"ipt type=\"text/javascript\" src=\"image/plupload/plupload.html4.js\"></scr"+"ipt><sc"+"ript type=\"text/javascript\" src=\"image/plupload/plupload.html5.js\"></scr"+"ipt><scr"+"ipt type=\"text/javascript\">alert(\"test\");</scr"+"ipt>";
p = /<script[^<]*?>([^<].+?)<\/script>/gi;
    var arr = new Array();
    while(arr = p.exec(s))
       document.write( arr[1] + "<br>");
LZ，您都赖得自己修改下下吗？就那样废结了前帖？<textarea id="test" style="width:600px;height:500px"><script type="text/javascript" src="image/plupload/plupload.js"></script><script type="text/javascript" src="image/plupload/plupload.flash.js"></script><script type="text/javascript" src="image/plupload/plupload.html4.js"></script><script type="text/javascript" src="image/plupload/plupload.html5.js"></script><script type="text/javascript">alert("test");</script>上面是你给定的字符串，下面的是论坛源码，删略是因为输入字符太长无法发帖，放一起提取是考虑正则的实际应用兼容性。<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
.................................
<title>通过正则匹配出js代码段（非src外部引用的）的问题 - Web 开发 / JavaScript</title>
<link href="http://c.csdn.net/bbs/t/5/t5.css" rel="stylesheet" type="text/css" />
<link href="http://www.csdn.net/images/favicon.ico" rel="SHORTCUT ICON" />
<script type="text/javascript">
var tinfo = {
    pdate: "2012-03-09 15:35:03"
    ,sid: "467d91e3-dd10-480b-a322-71b65e66c736"
    ,tid: "1f8cdf9c-3337-4f50-9976-49e857ee8214"
    ,ba: "WebDevelop"
    ,sa: "JavaScript"
};
</script>
<script type="text/javascript" src="/u/t5/t5.js"></script>
<script type="text/javascript" src="http://counter.csdn.net/a/js/AreaCounter.js"></script>
</head>
<body id="bbscsdn_wrap">
<script src="http://csdnimg.cn/pubnav/js/pub_topnav.js" type="text/javascript"></script>
<div class="nav">
............................
<script type="text/javascript">
    setTimeout(function () {
        document.getElementById("frm_tt1").src = "/u/t5/include/topic_top.html";
    }, 5000);
</script><div class="loc">
    <p>

<script type="text/javascript" src="http://ag.csdn.net/js/jquery-1.4.1.min.js"></script>
<script type="text/javascript">
    jQuery.noConflict();
</script>

<script type="text/javascript" src="http://event.blog.csdn.net/cloudad/ibm/ad.js?v=1"></script>

<script type="text/javascript">
    function setUnTopLink() {
        var _url = "http://forum.csdn.net/PointForum/Manage/Tops/deleteTop.aspx";
        _url += "?topicUrl=" + encodeURIComponent(location.href);
        _url += "&sectionID=" + encodeURIComponent(tinfo.sid);
        var _click = "try{showWindow({url:'" + _url + "',width:600,height:265,title:'取消置顶'});}catch(ex){}return false;";
        var li = jQuery('<li><a href="#" onclick="' + _click + '">取消置顶</a></li>');
        li.insertAfter(jQuery('#a_head_recreate').parent().next());
    }
    setTimeout("setUnTopLink()",3000);
</script>
</body>
</textarea>
<script>var str =document.getElementById("test").value;str = str.match(/<(script)(?!.*src)[^>]*>(?!<\/?\1>)[\S\s]*?<\/\1>/gi, "").join("\n");alert(str)</script>
这下，你写的那段字符串和实际论坛源码，按您的要求正则提取JS代码片段，应该都OK了吧。。