es6语法总结二Promise

    let checkLogin = function () {
        return new Promise(function (resolve, reject) {
            let flag = document.cookie.indexOf(‘userId‘)>-1?true:false;

            if(!flag){
                console.log(flag)
                resolve({
                    status:0,
                    result:true
                })
            }else {
                reject(‘error000‘);
            }
        })
    };

    let getUserInfo = () => {
        return new Promise((resolve,reject)=>{
            let userInfo = {
                userId:‘101‘
            };
            resolve({userInfo});
        });
    }

    checkLogin().then(function (res) {
        if(res.status==0){
            console.log(‘login succsess‘);
            return getUserInfo();
        }
    }).catch((error)=>{
        console.log(`errors:${error}`);
    }).then((res2)=>{
        console.log(`userId:${res2.userInfo.userId}`)
    }).catch((error)=>{

    })

    Promise.all([checkLogin(),getUserInfo()]).then(([res1,res2])=>{
        console.log(`result1:${res1.result},reult2:${res2.userInfo.userId}`);
    })