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js-event-loop
/
microtask.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>

</body>

<script>
    console.log('1.', new Promise((resolve, reject) => {
        resolve()
    }));
    console.log('2.', new Promise((resolve, reject) => {
    }));

    async function test() {
        return 1
    }

    console.log('3.', test());//3

    let p2 = test();
    let p3 = p2.then(res => console.log('6.', res));//6
    console.log('4,', p3);//4

    async function call_test() {
        console.log("5");
        let x = await test();
        console.log('7.', x);
    }
    call_test();

</script>

</html>