/**
 * 仿jq ajax  
 * by练涛  2021.1.20
 * @param {*} obj 
 */
const myajax = (obj = { url, headers, timeout, method, dataType, data, success, fail, complete }) => {
    //入参类型检测,如果不符合预期则，抛出异常
    if (typeof obj.url != "undefined" && typeof obj.url != \'string\') throw new TypeError(\'url不是string类型\');
    if (typeof obj.headers != "undefined" && typeof obj.headers != "object") throw new TypeError(\'headers不是object类型\');
    if (typeof obj.timeout != "undefined" && typeof obj.timeout != \'number\') throw new TypeError(\'timeout不是number类型\');
    if (typeof obj.method != "undefined" && typeof obj.method != \'string\') throw new TypeError(\'method不是nstring类型\');
    if (typeof obj.dataType != "undefined" && typeof obj.dataType != \'string\') throw new TypeError(\'dataType不是string类型\');
    if (typeof obj.data != "undefined" && typeof obj.data != \'object\' && !ArrayBuffer.isView(obj.data)) throw new TypeError(\'data不是object类型或者ArrayBuffer\');
    if (typeof obj.success != "undefined" && typeof obj.success != \'function\') throw new TypeError(\'success不是function类型\');
    if (typeof obj.fail != "undefined" && typeof obj.fail != \'function\') throw new TypeError(\'fail不是function类型\');
    if (typeof obj.complete != "undefined" && typeof obj.complete != \'function\') throw new TypeError(\'complete不是function类型\');
    return new Promise((resolve, reject) => {
        my.request({
            url: devUrl + obj.url,  //不会有人不写url吧。。。url!=""   
            method: obj.method || \'GET\',   //默认get
            dataType: obj.dataType || \'json\',   //默认json
            headers: obj.headers || null,
            timeout: obj.timeout || 30000,   //默认30000
            data: obj.data || null,
            success: (res) => {
                if (typeof obj.success == \'function\') {
                    obj.success(res);
                }
            },
            // 当程序出错或是网络请求失败都会执行该方法
            fail: (res) => {
                reject(res);
                if (typeof obj.fail == \'function\') {
                    obj.fail(res);
                }
            },
            complete: function (res) {
                //调用结束的回调函数（调用成功、失败都会执行）。
                if (typeof obj.complete == \'function\') {
                    obj.complete(res);
                }
            }
        });
    })
}

使用实例

//使用封装好的myajax
        /**  参数列表：
           * url:必填，其余可选
           * headers:{}, timeout, method, dataType, 
           * data:{}, 
           * success, fail, error, complete
         **/
        api.myajax({
            //url: "/test",
            url: "/findUserById",
            method: "GET",
            headers: {
                \'content-type\': \'application/json\'
                //设置请求的 HTTP 头对象，默认 {\'content-type\': \'application/json\'}，
                //该对象里面的 key 和 value 必须是 String 类型。
            },
            dataType: "json",   // text , json , base64
            data: {
                "id": "2"
            },
            success: function (res) {
                console.log("success:", res);
                console.log("data:", res.data);
                //this.msg = res.data.data.name
                that.setData({
                    //赋值
                    msg: res.data.data.name
                });
            },
            fail: function (res) {
                console.log("fail:", res);
                console.log("fail:", res.data);

            }

        });