1、正则表达式
2、
/**
* 获取指定的URL参数值
* URL:http://www.nanjijia.com/index?userId=15098185502
* 参数:paramName URL参数
* 调用方法:getParam(“name”)
* 返回值:userId
*/
function getParam(paramName) {
paramValue = “”, isFound = !1;
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) arrSource[i].indexOf(“=”) > 0 && arrSource[i].split(“=”)[0].toLowerCase() == paramName.toLowerCase() && (paramValue = arrSource[i].split(“=”)[1], isFound = !0), i++
}
return paramValue == “” && (paramValue = null), paramValue
}