promise和async中断或取消的办法

promise和async取消的办法:return 一个空的promise

直接return 一个false是没有效果的

async fn1() {
  await articleItems().then(res => {return false})
  await articleItems().then(res => {console.log(3)})
  console.log(4)
}
//3,4

这是在async的情况下,证明有效

   async fn1() {
      await articleItems().then(res=>{console.log(1); return new Promise(() => {})}).then(res=>articleItems().then(res => {console.log(5)}))
      await articleItems().then(res => {return false})
      await articleItems().then(res => {console.log(3)})
      console.log(4)
    }
//1

这是在promise的情况下,证明有效

  articleItems().then(res => {
    if (true) {
      console.log(1)
      return new Promise(() => {});
    }
  }).then(res => {
      console.log("2res");
    });
//1,res