自动维护localStorage，可在vue中响应，实时更新数据到js对象里。
Automatically maintain localstorage, listen in Vue and update data to JS object in real time.
demo:
let ls = new localStorageManager();
ls.data; // data in localStorage,auto update, values after format
ls.originData; // data in localStorage, values are strings
ls.set(key,value); // localStorage.setItem(); value can be an Object or Array
ls.get(key,needParse_or_Options); // localStorage.getItem(); needParse_or_Options is not required
ls.del(key); // localStorage.removeItem();
ls.clear(); // localStorage.clear();
ls.initData(force=false); // manual update ls.data
let app=new Vue({
el:'#app',
data:{
storageData:ls.data // when you changed localStorage, ls.data has been changed, {{storageData.name}} has been changed too.
}
})