原文链接：http://www.wyzu.cn/2015/0123/107167.html
0x00 实现功能
- 添加cookie
- 获取所有cookie
- 根据名字获取单个cookie的值
- 移除所有cookie
- 根据名字移除单个cookie
0x01 封装cookie.js源码
/*
* 名称和值传送时必须是经过RUL编码的
* cookie绑定在指定的域名下，非本域无法共享cookie，但是可以是在主站共享cookie给子站
* cookie的名称不分大小写；同时建议将cookie URL编码
* 建议针对cookie设置expires、domain、 path；每个cookie小于4KB
**/
(function(global){
function getCookiesObj() {
//获得cookie对象
var cookies = {};
if (document.cookie) {
var objs = document.cookie.split('; ');
for (var i in objs) {
var index = objs[i].indexOf('='),
name = objs[i].substr(0,index),
value = objs[i].substr(index+1,objs[i].length);
cookies[name] = value;
}
}
return cookies;
}
function set(sName,sValue,Opts) {
//设置cookie
// Opts expires,path,domain,secure
if (sName && sValue) {
var cookie = encodeURIComponent(sName)+'='+encodeURIComponent(sValue);
if (Opts) {
if (Opts.expires) {
var date = new Date();
date.setTime(date.getTime()+Opts.expires*24*3600*1000)
cookie += '; expires=' + date.toGMTString();
}
if (Opts.path) {
cookie += '; path=' + Opts.path;
}
if (Opts.domain) {
cookie += '; domain=' + Opts.domain;
}
if (Opts.secure) {
cookie += '; secure';
}
}
document.cookie = cookie;
return cookie;
} else {
return '';
}
}
function getCookie(name) {
//得到某个cookie
return decodeURIComponent(getCookiesObj()[name]) || null;
}
function getCookies() {
//得到所有cookie
return getCookiesObj();
}
function remove(name) {
//移除某个cookie
if (getCookiesObj()[name]) {
var date = new Date();
date.setDate(date.getDate()-1);
document.cookie = name + '=; expires='+date.toGMTString();
}
}
function clear() {
// 移除所有cookie
var cookies = getCookiesObj();
var date = new Date();
date.setDate(date.getDate()-1);
for (var key in cookies) {
document.cookie = key + '=; expires='+date.toGMTString();
}
}
function noConflict(name) {
//解决冲突
if (name && typeof name === 'string') {
if (name && window['cookie']) {
window[name] = window['cookie'];
delete window['cookie'];
return window[name];
}
} else {
return window['cookie'];
delete window['cookie'];
}
}
global['cookie'] = {
'set': set,
'getCookies': getCookies,
'getCookie': getCookie,
'remove': remove,
'clear': clear,
'noConflict': noConflict
};
})(window);
0x02 利用的a.html源码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>cookie example</title>
</head>
<body>
<script type="text/javascript" src="./cookie.js" ></script>
<script type="text/javascript">
console.log('----------cookie对象-------------');
console.log(cookie);
console.log('----------对象-------------');
console.log(cookie.getCookies());
console.log('----------设置cookie-------------');
console.log(cookie.set('name', 'wlh'));
console.log('----------设置cookie 123-------------');
console.log(cookie.set('name', 'wlh123'));
console.log('----------设置cookie age-------------');
console.log(cookie.set('age', 20));
// alert(document.cookie);
console.log('----------获取cookie-------------');
console.log(cookie.getCookie('name'));
console.log('----------获取所有-------------');
console.log(cookie.getCookies());
console.log('----------清除age-------------');
console.log(cookie.remove('age'));
console.log('----------获取所有-------------');
console.log(cookie.getCookies());
console.log('----------清除所有-------------');
console.log(cookie.clear());
console.log('----------获取所有-------------');
console.log(cookie.getCookies());
console.log('----------解决冲突-------------');
var $Cookie = cookie.noConflict(true /*a new name of cookie*/);
console.log($Cookie);
console.log('----------使用新的命名-------------');
console.log($Cookie.getCookies());
</script>
</body>
</html>
0x03 结果
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