awit的用法，等待執行結果

時間 2019-11-13

標籤 awit 用法等待執行結果简体版

原文原文鏈接

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>awit函數</title>
</head>
<body>
    <script>
       function shui () {
           return new Promise((reslove, reject) => {
                setTimeout(() => {
                    console.log('shui')
                    reslove('shui')
                }, 5000)
           })
       }
       function hai () {
           return new Promise((reslove, reject) => {
                setTimeout(() => {
                    console.log('hai')
                    reslove('hai')
                }, 10000)
           })
       }
       async function waitMe() {
        let a = await shui() // 1. 等待執行shui  5秒後 console.log('shui')
        let b = await hai() // 2. 等待執行完 hai 而後10s執行 console.log('hai')
        console.log(a + b) // shuihai
       }
       waitMe()
    </script>
</body>
</html>

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