cookie中存值:
function setCookie (name, value) {
if (value) {
var Days = 365
var exp = new Date()
exp.setTime(exp.getTime() + Days * 24 * 60 * 60 * 1000)
document.cookie = name + '=' + escape(value) + ';expires=' + exp.toGMTString()
}
}
cookie取值:
function getCookie(name){
var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
if(arr=document.cookie.match(reg))
return unescape(arr[2]);
else
return null;
},
清除指定cookie值:
function delCookie (name) {
var exp = new Date()
exp.setTime(exp.getTime() - 1)
var cval = setCookie(name)
if (cval && cval != null) {
document.cookie = name + '=' + cval + ';expires=' + exp.toGMTString()
}
}
清除全部cookie值:
function clearCookie () {
var keys = document.cookie.match(/[^ =;]+(?=\=)/g)
if (keys) {
for (var i = keys.length; i--;) {
document.cookie = keys[i] + '=0;expires=' + new Date(0).toUTCString()
}
}
}
cookie中特殊字符處理:(分號(;)、逗號(,)、等號(=)以及空格)
js對文字進行編碼涉及3個函數:
編碼:escape,encodeURI,encodeURIComponent,
解碼:unescape,decodeURI,decodeURIComponent