import axios from 'axios'
export default {
  mounted() {
    // this.getTodos().then((res) => {
    //   console.log('todos', res.data)
    //   this.getComments().then((res) => {
    //     console.log('comments', res.data)
    //     this.getAlbums().then((res) => {
    //       console.log('albums', res.data)
 

    //     })
    //   })
    // })
    // 當請求之間有依賴關係時，上面的寫法會導致回撥地獄，推薦下面的寫法
    this.getTodos()
      .then((res) => {
        console.log('todos', res.data)
        return this.getComments()
      })
      .then((res) => {
        console.log('comments', res.data)
        return this.getAlbums()
      })
      .then((res) 
 
=> {
        console.log('albums', res.data)
      })
  },
  methods: {
    getTodos() {
      return axios.get('https://jsonplaceholder.typicode.com/todos?_limit=5')
    },
    getComments() {
      return axios.get('https://jsonplaceholder.typicode.com/comments?_limit=5')
    },
    getAlbums() {
      
 
return axios.get('https://jsonplaceholder.typicode.com/albums?_limit=5')
    }
  }
}