心机面试题3

//以下代码输出顺序是
setTimeout(function(){
    console.log(1)
},0);
new Promise( function executor(resolve){
     console.log(2);
for(var i=0;i<10000;i++){
      i==9999&&resolve();
}
     console.log(3);
}).then(function(){
     console.log(4);
});
  console.log(5);