ajax就是一个promie
<!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>Document</title>
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.js"></script>
</head>
<body>
<script>
var url ="https://music.aityp.com/top/playlist?tag=华语"
/* ajax就是一个promie */
var ajax = $.ajax({url,type:"get"})
console.log(ajax)
ajax.then(res=>{
console.log(res)
})
</script>
</body>
</html>