<script>
function getRequest(name,url){
var str= name + "=([^&]*)";
var reg = new RegExp(str);
if(reg.test(url)){
return RegExp.$1;
}
return ""
}
var url = "http://www.sina.com.cn.aspx?z=fasdf";
alert(getRequest("z",url));
</script>
function getRequest(name,url)
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