js 获取url地址的get参数

$_GET['']

function getUrl() {
var url = location.search; //获取url中"?"符后的字串
var theRequest = new Object();
if (url.indexOf("?") != -1) {
var str = url.substr(1);
strs = str.split("&");
for(var i = 0; i < strs.length; i ++) {
theRequest[strs[i].split("=")[0]]=unescape(strs[i].split("=")[1]);
}
}
return theRequest;
}

//比如我们获取这个url http://localhost/get_url.php?title=get_url var get_url = getUrl();
alert(get_url['title']);