ES6的Promise怎么用?

Question

1.ES6的Promise怎么用?譬如这段代码,我想用.then获取window的返回值,z在angular4中使用;
2这是代码:

let play = {
  charge:'',  // 安卓: valubioAlipay
  scheme: ''}JSON.stringify(play);window['webkit'].messageHandlers.pingPPlus.postMessage(play)

Answer 1

new Promise((resolve,reject)=>resolve(window['webkit'])) .then(result=>{    //do something})