T1 ​

setTimeout(() => { // 会立即放入宏列队
      console.log('timeout callback1()')
      Promise.resolve(3).then(
        value => { // 会立即放入微列队
          console.log('Promise onResolved3()', value)
        }
      )
    }, 0)
    setTimeout(() => { // 会立即放入宏列队
      console.log('timeout callback2()')
    }, 0)
    Promise.resolve(1).then(
      value => { // 会立即放入微列队
        console.log('Promise onResolved1()', value)
      }
    ) 
    Promise.resolve(2).then(
      value => { // 会立即放入微列队
        console.log('Promise onResolved2()', value)
      }
    )

Promise onResolved1() 1
Promise onResolved2() 2
timeout callback1()
Promise onResolved3() 3
timeout callback2()