<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script type="text/javascript">
console.log('start');
setTimeout(function(){
console.log('setTimeout')
},0)
Promise.resolve().then(function(){
console.log('promise1')
}).then(function(){
console.log('promise2')
})
console.log('end')
</script>
</head>
<body>
</body>
</html>
答案：
