How to use Promise object Promise.all() method in Vue? (Pure code)-JS Tutorial-php.cn

How to use Promise object Promise.all() method in Vue? (Pure code)

不言

Release： 2018-08-01 16:49:33

Original

7701 people have browsed it

This article introduces to you how to use the Promise.all() method of the Promise object in Vue? It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

1. Define promise

<script type="text/javascript">
// 定义一些公共的属性和方法
const httpUrl = 'http://39.105.17.99:8080/'
function promiseFun (url, params) {
  return new Promise((resolve, reject) => {
    this.$http.post(this.globalHttpUrl + url, params).then(
      (res) => {
        resolve(res.json())
      },
      (err) => {
        reject(err.json())
      }
    )
  })
}
var p1 = Promise.resolve(1)
var p2 = Promise.resolve(2)
var p3 = Promise.resolve(3)
Promise.all([promiseFun, p1, p2, p3]).then((res) => {
  console.log(res, 'promise all 方法')
})
// 暴露出这些属性和方法
export default {
  httpUrl,
  promiseFun
}
</script>

Copy after login

2. Use it in components

methods: {
    loginInFun () {
      localStorage.setItem('userId', '00001')
      let params = {
        telphone: this.username,
        password: this.password
      }
      let pro1 = this.promiseFun('itArtison/user/login', params)
      let pro2 = this.promiseFun('itArtisOn/user/register', params1)
      
      // 使用 Promise.all()
      Promise.all([pro1, pro2]).then(
          (res) => {
              console.log(res);
          }
      ).catch(
          (err) => {
              console.log(err)
          }
      )

Copy after login