js-cookie插件来管理cookie

一、安装

npm install js-cookie --save

二、引用

import Cookies from 'js-cookie'

三、一般使用

存到Cookie去

// 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: '' });

2.在Cookie中取出

// Read cookie:
Cookies.get('name'); // => 'value'
Cookies.get('nothing'); // => undefined

// Read all visible cookies:
Cookies.get(); // => { name: 'value' }

3.删除

// 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!

四、特殊使用（在Cookie中存对象）

跟一般使用不同的是，从Cookie中取出的时候，要从字符串转换成json格式：

const user = {
  name: 'lia',
  age: 18
}
Cookies.set('user', user)
const liaUser = JSON.parse(Cookies.get('user'))

五、打包成单独文件

1.配置文件：website.js

export default {
  cookieKeys: {
    user_id: 'user_id',
  }
}

2.存储文件名：cookiestore.js

import Cookies from 'js-cookie'//引用js-cookie插件
import website from '@/const/website'//调用配置文件

function get(key) {
  return Cookies.get(key, { domain: document.domain.split('.').slice(-2).join('.'), path: '/' })
}
function set(key, value) {
  return Cookies.set(key, value, { domain: document.domain.split('.').slice(-2).join('.'), path: '/' })
}
function remove(key) {
  return Cookies.remove(key, { domain: document.domain.split('.').slice(-2).join('.'), path: '/' })
}

// 需要管理的cookie值
export function getUserId() {
  return get(website.cookieKeys.user_id)
}
export function setUserId(user_id) {
  return set(website.cookieKeys.user_id, user_id)
}
export function removeUserId() {
  return remove(website.cookieKeys.user_id)
}
//删除建立的cookie
export function removeAll() {
  removeUserId()
}

3.具体应用界面

import {setUserId,getUserId,removeUserId,removeAll}  from  '@/utils/cookiestore'//第二步建立的文件
export default {
created() {
    var user_id = getUserId()
    ...
}
}