js 事件循环面试题

js 事件循环面试题

Promise之后的then中的参数result 取决于 之前 Promise.resolve(param)的 param

console.log(1);
setTimeout(()=>console.log(2));
new Promise((resolve, reject)=>{
  Promise.resolve(3).then((result)=>{
    console.log(result);
  });
  resolve();
  console.log(4);
}).then((result)=>{
  console.log(result);
}, (error)=>{
  console.log(error);
});
console.log(5);

//1  4  5  3  undefined   2