高分求一javascript字符串处理函数

[hurtzll]

要求：

源串：

var html = 'Info: <img class="blah" onclick="swap()" src="image.gif" alt="My dog"><br>My cat: <img class="blah" onclick="swap()" src="image2.gif" alt="My cat">'

处理后变成：

'Info: <img src="image.gif" alt="My dog"><br>My cat: <img src="image2.gif" alt="My cat">'

也就是能把指定的标签去掉！

[flyycyu]

String.prototype.cleanTag = function(tagName, attrList)
{
attrList = attrList.join("|");

var tagCrit = "/<" + tagName + "[^>]*>/i";
eval('var tagExp = ' + tagCrit);

var attrcrit = "/(\\s+(" + attrList + ")\\s*=\\s*(\\w+|[\"][^\"]*[\"]|['][^']*[']))+/i";
eval('var attrexp = ' + attrcrit);

var sr;
var s = this;
var result = new StringBuffer("");
var base = 0;

the process
while ((sr = tagExp.exec(s)) != null)
{
result.a(s.substring(base, sr.index));
//var newTag = sr[0].replace(attrexp, '');
var newTag;
result.a('<');
result.a(tagName);
while ((newTag = attrexp.exec(sr[0])) != null) {
//var newTag = attrexp.exec(sr[0]);
result.a(newTag[0]);
sr[0] = sr[0].substring(newTag.lastIndex);
}
s = s.substring(sr.lastIndex);
result.a('>');
}
result.a(s);
return result.toString();
}

[hurtzll]

to flyycyu:
谢了，怎么用？

还有StringBuffer是javascript的内部对象吗？

能否把函数给全？

再次谢谢！

[freefalcon]

<script>
var html = 'Info: <img class="blah" onclick="swap()" src="image.gif" alt="My dog"><br>My cat:<img class="blah" onclick="swap()" src="image2.gif" alt="My cat">';
var new_html=html.replace(/(class=.*?\s|onclick=.*?\s)/gi,"");
alert(new_html);
</script>

没有考虑特殊情况，仅以可用为原则

[flyycyu]

StringBuffer是编写的javascript中类似于
java里面的StringBuffer类，这个就不发了！
你可以用字符串相加实现！

用法：

html.cleanTag("IMG", ["SRC","ALT"]);

这样就保留了SRC和ALT

[hurtzll]

i see,thx