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@@ -0,0 +1,44 @@
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+<!DOCTYPE html>
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+<html lang="en">
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+
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+<head>
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+ <meta charset="UTF-8">
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+ <meta http-equiv="X-UA-Compatible" content="IE=edge">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+</head>
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+
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+<body>
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+ <script>
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+ // 说出下面代码的输出
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+ async function async1() {
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+ console.log('async1 start');
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+ await async2();
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+ console.log('async1 end');
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+ }
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+ async function async2() {
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+ console.log('async2');
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+ /* return new Promise((resolve, reiejct) => {
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+ resolve()
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+ }) */
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+ /* Promise1.then((Promise2)=>{
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+ Promise2.then(()=>{
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+ console.log()
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+ })
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+ }) */
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+ }
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+ console.log('script start')
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+ async1();
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+ new Promise(function (resolve) {
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+ console.log('promise1');
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+ resolve();
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+ }).then(function () {
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+ console.log('promise2');
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+ });
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+ console.log('script end')
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+ //sc start => asy1 start => asy2 => p1 => sc end => p2 => asy1 end
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+
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+ </script>
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+</body>
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+
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+</html>
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zsydgithub