componentWillMount(){
    setTimeout(()=>{
      alert(1);
    },100)
  }

  componentDidMount(){
    setTimeout(()=>{
      alert(2);
    },100)
  }
  

The two life cycle functions in the component have asynchronous operations. The execution order is strictly in accordance with the order of the declaration cycle, that is, first 1 and then 2. It is still uncertain whether the execution order is based on the order inserted into the message queue. ? The problem can be understood as assuming that the asynchronous result of componentWillMount returns a very long time, and the asynchronous result of componentDidMount returns a very short time. Is it possible to first execute the callback result in componentDidMount, and then execute the callback result in componentWillMount