一般关于js读取cookie方法有很多,我们下面的实例函数主要是利用split函数来分切,和document.cookie获取所有cookie再利用for遍历所有数组,判断如果cookie名相同,那么这个cookie 就是我们要找的。 方法一 代码如下:
var acookie=document.cookie.split("; ");
function getck(sname) {//获取单个cookies for(var i=0;i<acookie.length;i++){ var arr=acookie[i].split("="); if(sname==arr[0]){ if(arr.length>1) return unescape(arr[1]); else return "";}} return ""; }
方法二 代码如下:
function getcookie(objname){//获取指定名称的cookie的值
var arrstr = document.cookie.split("; "); for(var i = 0;i < arrstr.length;i ++){ var temp = arrstr[i].split("="); if(temp[0] == objname) return unescape(temp[1]); } }
代码如下:
function getcookie(cookiename){
var cookiestring = document.cookie; var start = cookiestring.indexof(cookiename + '= '); if (start == -1) // 找不到 return null; start += cookiename.length + 1; var end = cookiestring.indexof( "; ", start); if (end == -1) return unescape(cookiestring.substring(start)); return unescape(cookiestring.substring(start, end)); }
方法四 代码如下:
function readcookie(name)
{ var cookievalue = ""; var search = name + "="; if(document.cookie.length > 0) { offset = document.cookie.indexof(search); if (offset != -1) { offset += search.length; end = document.cookie.indexof(";", offset); if (end == -1) end = document.cookie.length; cookievalue = unescape(document.cookie.substring(offset, end)) } } return cookievalue; } |
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