宏任务&微任务

发表于 分类于 / Changyan：

先 Mark 一下，抽空再写…

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console.log('sync1');

setTimeout(function () {
  console.log('setTimeout1');
}, 0);

var promise = new Promise(function (resolve, reject) {
  setTimeout(function () {
    console.log('setTimeoutPromise');
  }, 0);
  console.log('promise');
  resolve();
});

promise.then(() => {
  console.log('pro_then');
  setTimeout(() => {
    console.log('pro_timeout');
  }, 0);
});

setTimeout(function () {
  console.log('last_setTimeout');
}, 0);
console.log('sync2');