【无标题】宏任务与微任务、事件循环

 // Twitter面试题-20%答对
    document.body.addEventListener('click', () => {
      let p = new Promise(resolve => resolve(1))
      p.then(result => console.log(result))
      console.log(2)
    })
    document.body.addEventListener('click', () => {
      let p = new Promise(resolve => resolve(3))
      p.then(result => console.log(result))
      console.log(4)
    })

用鼠标点击一下屏幕，输出结果为 2 1 4 3