1.2 获取数据

<script>
    var flag = true;
    var promiseObj = new Promise(function (resolve, reject) {
        if (flag) {
            resolve({
                name: 'zs'
            });
        } else {
            reject({
                msg: '失败了'
            })
        }
    })
    //获取promiseObj对象的数据，then获取成功的信息，catch获取失败的信息
    promiseObj.then(function (res) {
        console.log(res);
    }).catch(function (error) {
        console.log(error);
    })
</script>