求助:替换URL的正则表达式

Question

<SCRIPT LANGUAGE="JavaScript">
<!--
function replaceSrc(baseUrl,html)
{ var r = /src=([\'\"]?)([^\'\"]*?)\1/gi; var u = baseUrl.replace("http:\/\/",""); if(u.indexOf("\/")>=0)
{
baseUrl = "http:\/\/" + u.substring(0,u.indexOf("\/")+1);
}
else
{
baseUrl = "http:\/\/" + u;
}
html = html.replace(r,function(){if(arguments[2].indexOf("http:\/\/")>=0){ return arguments[0];} else {return arguments[0].replace(arguments[2],baseUrl + arguments[2]);}}); return html;}var htm = "hello <a src=\"a.htm\">asdfd</a><img src='a.jpg'>";alert(replaceSrc("http://www.google.com/",htm));
//-->
</SCRIPT>

Answer 1

在你的基础上改下
<script language=javascript>
str="<a href=\"/lo/index.html\"><a href=\"./go.html\">";
re=/(<a\s+href\s*=\s*\")(\.|\/lo)([^\"]*)(\"\s*>)/gi
alert(str.replace(re,"$1http://www.xxx.com/lo$3$4"))
</script>

Answer 2

<script type="text/javascript">
var testString="<A Href=\"/lo/index.html\">aaa</a><a href=\"./ww/default.asp\">";
alert(testString.replace(/(\<\a\shref=\")([^\"]+)/ig,function($0,$1,$2){return $1+"http://www.xxx.com"+$2.replace(/^\.{1}/,"")}));
</script>