「 JS 」 May 20, 2018

八段代码彻底掌握 Promise

Words count 10k Reading time 9 mins.

• Promise

//1
var p = new Promise(function(resolve, reject){
  console.log("create a promise");
  resolve("success");
});
//2
console.log("after new Promise");
//3
p.then(function(value){
  console.log(value);
});