ES6的promise - LiangYiDong/study GitHub Wiki

ES6的promise

  var a = new Promise((resolve,reject) => {
    setTimeout(function(){
       console.log("a-done");
       resolve("a-数据")
    },2000)
  });
  var b = new Promise((resolve,reject) => {
     setTimeout(function(){
        console.log("b-done");
        resolve("b-数据")
     },5000)
  });

  const p = Promise.all([a,b]);
  p.then((data) => {
    console.log(data)
  })