如何操作JS Cookie插件

這次帶給大家如何操作JS Cookie插件，操作JS Cookie插件的注意事項有哪些，以下就是實戰案例，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!

#參考方法:

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與方法

a、設定cookie

Cookies.set('name', 'value', { expires: 7, path: '' });

//7天過期

Cookies.set('name', { foo: 'bar' });

//設定一個jsonb、讀取cookie

Cookies.get('name');

//取得cookie

Cookies.get();

#讀取所有的cookiec、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 does notento do​​yet 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 origariable and restore the orig。 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"}' }

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' } }

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