ES6的异步 async promise

执行下面的代码，得到的结果是什么

start

p1_3000

p2_1000

end

结束

 

<script>
 function p1(){
	return new Promise(function(resolve,reject){
		setTimeout(function(){
			console.log("p1_3000");
			resolve();
		},3000)
	})
   
}
function p2(){
	return new Promise(function(resolve,reject){
		setTimeout(function(){
			console.log("p2_1000");
			resolve();
		},1000)
	})
}

//await 只能出现在异步函数里
 async function process(){
	console.log("start");
	await p1();
	await p2();
	console.log("end");
 }
 
 p3 = process();
 p3.then(function(){
	 console.log("结束");
 });
 
</script>