0%

723_promise问题_改变状态和执行回调顺序

<script>
      let p = new Promise((resolve, reject) => {
        //若是异步任务则先执行回调再改变状态
        //若是同步任务则先改变状态
        setTimeout(() => {
          resolve("OK");
        }, 1000);
      });

      p.then((value) => {
        console.log("wrong");
      });
    </script>