码农干货系列【17】Wind.js与Promise.js

示例

先引入wind.js与promise.js:

    <script src="wind-all-0.7.3.js"></script>
    <script src="promise.js"></script>

然后create:

        Wind.Promise.create = function (fn) {
            var prms = Promise();
            fn(prms.resolve, prms.reject);
            return prms;
        }

最后:

        var testAsync = eval(Wind.compile("promise", function () {
            for (var i = 0; i < 3; i++) {        //loop  3  times
                var aa = $await(f1());
                alert(aa);                       //alert  "from f1"
                $await(f2().wait(3000));         //sleep  3000ms
                $await(f3());
            }
        }));

        testAsync();

        function f1() {
            var promise = Promise();
            setTimeout(function () {
                console.log(1);
                promise.resolve("from f1");
            }, 2500)

            return promise;
        }

        function f2() {
            var promise = Promise();
            setTimeout(function () {
                console.log(2);
                promise.resolve();
            }, 1500)

            return promise;
        }

        function f3() {
            var promise = Promise();
            setTimeout(function () {
                console.log(3);
                promise.resolve();
            }, 1500)

            return promise;
        }

Todo

解决$await(testAsync())之后掉链子的问题。

扩展阅读

Wind.js

Jscex与Promise/A那些事