js擷取url參數值的兩種方式詳解

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js擷取url參數值的兩種方式詳解

有個url如下:

http://passport.csdn.net/account/login?from=http%3a%2f%2fwrite.blog.csdn.net%2fpostedit

我們該如何擷取from這個參數的值呢?在網上搜了下方法很簡單,如下,第一種是通過正則,第二種通過切串放進數組的方式:

方法一:

function getQueryString(name) {var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");var r = window.location.search.substr(1).match(reg);if (r != null) return unescape(r[2]); return null;}var from = getQueryString("from");alert(from);


方法二:

function GetRequest() { var url = location.search; //擷取url中"?"符後的字串 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; } var req = GetRequest(); var from = req['from'];alert(from);








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