Promise处理ajax

//引入jquery
<script src="http://localhost:52849/lib/jquery/dist/jquery.min.js"></script>
<script>
        //Promise处理ajax
        function ajaxAsync(param) {
            return new Promise((resovle, reject) => {
                $.ajax({
                    "type": param.type || "get",
                    "url": param.url,
                    "data": param.data || "",
                    "success": res => {
                        resovle(res);
                    },
                    "error": err => {
                        reject(err);
                    }
                })
            })
        }
        $(async function () {
            //第一种请求方式
            try {
                //await 同步请求
                var res = await ajaxAsync({
                    url: "http://localhost:52849/MyHome/GetString"
                })
                //成功返回值
                console.log(res);
            } catch (e) {
                //失败返回值
                console.log(e);
            }

            //第二种请求方式
            await ajaxAsync({
                url: "http://localhost:52849/MyHome/GetString"
            }).then(res => {
                //成功返回值
                console.log(res);
            }).catch(err => {
                //失败返回值
                console.log(e);
            })
        })
    </script>