javascript從url中獲取請(qǐng)求參數(shù)

function getUrlParam(name) {
            var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)"); //構(gòu)造一個(gè)含有目標(biāo)參數(shù)的正則表達(dá)式對(duì)象
            var r = window.location.search.substr(1).match(reg);  //匹配目標(biāo)參數(shù)
            if (r != null) return unescape(r[2]); return null; //返回參數(shù)值
}