编辑代码

async function async1 () {
	console.log('async1 start')
	await async2()
	console.log('async1 end')
}

async function async2 () {
	console.log('async2')
}

console.log('script start')

setTimeout(function() {
	console.log('setTimeout')
}, 0)

async1()

new Promise(function (resolve) {
	console.log('proimse1')
	resolve()
}).then(function() {
	console.log('promise2')
})
console.log('script end')