javascript await正确写法

javascript await正确写法 (支持微信小程序)

ps

1 返回异步的前面都加个关键字 async 

2 await必须卸载async里面 因为是异步里面的同步 

async function doubleAfter2seconds(num) {
    return new Promise((resolve, reject) => {
      setTimeout(() => {
        resolve('2秒后触发');
      }, 2000);
    })
  }
async  function doubleAfter1seconds(num) {
    return new Promise((resolve, reject) => {
      setTimeout(() => {
        resolve('1秒后触发')
      }, 1000);
    })
  }

async function ssd(){
  var result = await doubleAfter2seconds(30);
  console.log(result);
  var result = await doubleAfter1seconds(30);
  console.log(result);

}

ssd();