1.     <script>
    2.         function runAsync1() {
    3.             var p = new Promise(function (resolve, reject) {
    4.                 setTimeout(function () {
    5.                     resolve('数据1');
    6.                     return '数据2'
    7.                 }, 1000);
    8.             });
    9.             return p;
    10.         };
    12.         function runAsync2() {
    13.             var p = new Promise(function (resolve, reject) {
    14.                 setTimeout(function () {
    15.                     resolve('数据3');
    16.                     return '数据4'
    17.                 }, 2000);
    18.             });
    19.             return p;
    20.         };
    21.         function runAsync3() {
    22.             var p = new Promise(function (resolve, reject) {
    23.                 setTimeout(function () {
    24.                     resolve('数据5');
    25.                     return '数据6'
    26.                 }, 3000);
    27.             });
    28.             return p;
    29.         };
    31.                 //若是Promise.all中有一个值的状态是reject则返回第一个reject的值
    32.         Promise.all([runAsync1(), runAsync2(), runAsync3()])
    33.             .then(function (results) {
    34.                 console.log(results);
    35.             })
    36.             .catch(function (reason) {
    37.                 console.log(reason);
    38.             })
    39.     </script>