sectionStorage与localStorage更新缓存，以及更新layui的数据缓存

var aa = sessionStorage.getItem(‘datInfo‘);//获取缓存数据
name = aa.user;
var names = ‘张三‘;
sessionStorage.setItem(‘name‘,names);

var keyDatas = layui.sessionData(‘myData‘);
            var userInfo = keyDatas.user;
            userInfo.pic=res.data;
            
            layui.sessionData(‘myData‘,{
                key :"user",
                value: userInfo
            });