队列的执行顺序

<script>
    console.log("script start");
    async function async1(){
        await  async2();
        console.log("async1 end");
    }
    async function async2(){
        console.log("async2 end");
    }
    async1();
    setTimeout(function(){
        console.log("setTimeout")
    },0);
    new Promise(resolve => {
        console.log("Promise");
        resolve()
    }).then(function(){
        console.log("Promise1");
    }).then(function(){
        console.log("Promise2");
    });
    console.log("script end");

    /*
        script start
        async2 end
        Promise
        script end
        async1 end
        Promise1
        Promise2
        setTimeout

    */
    /*
        先执行微任务，在执行宏任务
        wait会阻塞async1后面的代码执行，所以先跳出来继续执行后面的代码。
        微任务:then()
        宏任务：setTimeout
    */
</script>

队列的执行顺序

原文：https://www.cnblogs.com/zhangyue690811/p/12072867.html