這次帶給大家js-cookie使用步驟詳解，js-cookie使用的注意事項有哪些，下面就是實戰案例，一起來看一下。
Cookie是網站設計者放置在客戶端的小文字文件，一般後台語言使用的比較多，可以實現使用者個人化的一些需求。 js-cookie插件是一個JS操作cookie的插件，原始檔只有3.34 KB，非常輕量級。 js-cookie也支援npm和Bower安裝和管理。以下來看看js-cookie的具體用法。
A simple, lightweight JavaScript API for handling cookies
Works in all browsers
Accepts any character
Heavily tested
No dependency
# Unobtrusive JSON support
Supports AMD/CommonJS
RFC 6265 compliant
Useful Wiki
Enable custom encoding/decoding
~900 bytes gzipped!
引用方法:
1、引入js-cookie.js
##1.直接飲用cdn：2.本地下載下來後：
3.
模組化開發時: import Cookies from 'js-cookie'
2、 js-cookie.js常用的API和方法
a、設定cookie
Cookies.set('name', 'value', { expires: 7, path : '' });//7天過期
Cookies.set('name', { foo: 'bar' });//設定一個json
b、讀取cookie
Cookies.get('name');//取得cookie
Cookies.get(); #讀取所有的cookie
c、刪除cookie
Cookies.remove('name'); #刪除cookie時必須是同一個路徑。
以下是國外的介紹
Basic Usage
Create a cookie, valid across the entire site:
# Cookies.set('name', 'value');
Create a cookie that expires 7 days from now, valid across the entire site:
Cookies.set ('name', 'value', { expires: 7 });
Create an expiring cookie, valid to the path of the current page:
Cookies. set('name', 'value', { expires: 7, path: '' });
Read cookie:
Cookies.get('name' ); // => 'value'Cookies.get('nothing'); // => undefined
Read all visible cookies:
Cookies.get(); // => { name: 'value' }
#Delete cookie:
Cookies.remove('name');
Delete a cookie valid to the path of the current page:
#Cookies.set('name', 'value', { path: '' });Cookies.remove('name'); // fail!
Cookies.remove('name', { path: '' }); // removed!
IMPORTANT! When deleting a cookie, you must pass the exact same path and domain attributes that were used to set the cookie, unless you're relying on the default attributes.
Note: Removing a nonexistent cookie doany noted raise doany ##ise doany
exception nor return any value.
Namespace conflicts
If there is any danger of a conflict with the namespace Cookies, the noConflict method will allow you to define a new namespace and preserve the original one. This is especially useful when running the script on third party sites e.g. as part of a widget or SDK.
// Assign the js-cookie api to a different variable and restore the original "window.Cookies"
var Cookies2 = Cookies.noConflict();
Cookies2.set('name', 'value');
Note: The .noConflict method is not necessary when using AMD or CommonJS, thus it is not exposed in those environments.
JSON
js-cookie provides unobtrusive JSON storage for cookies.
When creating a cookie you can pass an Array or Object Literal instead of a string in the value. If you do so, js-cookie will store the string representation of the object according to JSON.stringify:
Cookies.set('name', { foo: 'bar' });
When reading a cookie with the default Cookies.get api, you receive the string representation stored in the cookie:
Cookies.get('name'); // => '{"foo":"bar"}'
Cookies.get(); // => { name: '{"foo":"bar"}' }登入後複製
When reading a cookie with the Cookies.getJSON api, you receive the parsed representation of the string stored in the cookie according to JSON.parse:
Cookies.getJSON('name'); // => { foo: 'bar' }
Cookies.getJSON(); // => { name: { foo: 'bar' } }登入後複製
Note: To support IE6-7 (and IE 8 compatibility mode) you need to include the JSON-js polyfill: https://github.com/douglascrockford/JSON-js
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