博文背景

{{ message }}

this.axios.get(‘xxx’).then(response=>(this.message=response.data))后面接箭头函数可以返回结果但是直接改成普通函数不可以返回结果

解决办法

<template>
  <div id="app">
<!--    <img alt="Vue logo" src="./assets/logo.png">-->
<!--    <HelloWorld msg="Welcome to Your Vue.js App"/>-->
    <pre>{{ info }}</pre>

  </div>
</template>

<script>
// import HelloWorld from './components/HelloWorld.vue'

// import axios from "axios";

export default {
  name: 'App',
  // components: {
    // HelloWorld
  // },
  // data() {
  //   return {
  //     message: "hello world"
  //   }
  // }
  // data: function() {
  //   return {
  //     message: "hello world"
  //   }
  // }
  data() {
    return {
      info: "waiting for api requesting"
    }
  },
  // async mounted() {
  //   await this.axios.get('https://httpbin.org/get').then(response => JSON.stringify(this.info = response.data, null, 4))
  // }

  // 错误
  async mounted() {
    await this.axios.get('https://httpbin.org/get').then(function(response) {
      console.log(response.data);
      console.log(typeof(response.data))
      return Promise.resolve(this.info=response.data["url"]);
    })
  }
}
  // 正确
  async mounted() {
    let that=this;
    await this.axios.get('https://httpbin.org/get').then(function(response) {
      console.log(response.data);
      console.log(typeof(response.data))
      return Promise.resolve(that.info=response.data["url"]);
    })
  }
}
</script>

<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  font-size: 18px;
  /*-moz-osx-font-smoothing: grayscale;*/
  /*text-align: center;*/
  color: #2c3e50;
  /*margin-top: 60px;*/
}
</style>