<!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函数</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. 等待执行shui 5秒后 console.log(‘shui‘)
let b = await hai() // 2. 等待执行完 hai 然后10s执行 console.log(‘hai‘)
console.log(a + b) // shuihai
}
waitMe()
</script>
</body>
</html>
原文：https://www.cnblogs.com/cengjingdeshuige/p/11848305.html