VUE.JS 缓存 good-storage ：
good-storage 是一个插件，需要安装
localStorage 临时缓存（关闭浏览器自动销毁）
sessionStorage 长期缓存（主动清楚缓存才会销毁）
安装步骤：
在命令行安装
npm install good-storage
使用：
1 import storage from 'good-storage' 2 3 // localStorage 4 storage.set(key,val) 5 6 storage.get(key, def) 7 8 // sessionStorage 9 storage.session.set(key, val) 10 11 storage.session.get(key, val) 12 缓存的API 13 14 set(key, val) 15 set storage with key and val 16 17 get(key, def) 18 get storage with key, return def if not find 19 20 remove(key) 21 remove storage with key 22 23 has(key) 24 determine storage has the key 25 26 clear() 27 clear all storages 28 29 getAll() 30 get all the storages 31 32 forEach(callback) 33 forEach the storages and call the callback function with each storage