JS获取地址栏中的某个参数值

获取浏览器地址栏URL中的某个参数值。

function getParam(paramName){
	paramValue = "";
	isFound = false;
	if (this.location.search.indexOf("?") == 0 && this.location.search.indexOf("=")>1){
		arrSource = unescape(this.location.search).substring(1,this.location.search.length).split("&");
		i = 0;
		while (i < arrSource.length && !isFound){
			if (arrSource[i].indexOf("=") > 0){
				if (arrSource[i].split("=")[0].toLowerCase()==paramName.toLowerCase()){
					paramValue = arrSource[i].split("=")[1];
					isFound = true;
				}
			}
			i++;
		}
	}
	return paramValue;
}
var id=getParam('id');
alert(id);