vue.jsHow can I use Vue.js to build a HackerNews clone?

Vue.js is a powerful JavaScript framework that can be used to build a HackerNews clone. To do this, you will need to create a few components such as a post list, a post detail, and a comment section.

The post list component would fetch the posts from the HackerNews API and display them in a list. An example of this component is below:

<template>
  <div>
    <h1>HackerNews Posts</h1>
    <ul>
      <li v-for="post in posts" :key="post.id">
        {{ post.title }}
      </li>
    </ul>
  </div>
</template>

<script>
export default {
  data() {
    return {
      posts: []
    }
  },
  created() {
    fetch('https://hacker-news.firebaseio.com/v0/topstories.json')
      .then(res => res.json())
      .then(ids => {
        ids.slice(0, 10).forEach(id => {
          fetch(`https://hacker-news.firebaseio.com/v0/item/${id}.json`)
            .then(res => res.json())
            .then(post => {
              this.posts.push(post)
            })
        })
      })
  }
}
</script>

The post detail component would display the details of a post when clicked on. An example of this component is below:

<template>
  <div>
    <h1>{{ post.title }}</h1>
    <p>{{ post.text }}</p>
  </div>
</template>

<script>
export default {
  props: ['post'],
  data() {
    return {
      post: {}
    }
  }
}
</script>

Finally, the comment section component would fetch the comments from the HackerNews API and display them. An example of this component is below:

<template>
  <div>
    <h1>Comments</h1>
    <ul>
      <li v-for="comment in comments" :key="comment.id">
        {{ comment.text }}
      </li>
    </ul>
  </div>
</template>

<script>
export default {
  props: ['postId'],
  data() {
    return {
      comments: []
    }
  },
  created() {
    fetch(`https://hacker-news.firebaseio.com/v0/item/${this.postId}/kids.json`)
      .then(res => res.json())
      .then(ids => {
        ids.slice(0, 10).forEach(id => {
          fetch(`https://hacker-news.firebaseio.com/v0/item/${id}.json`)
            .then(res => res.json())
            .then(comment => {
              this.comments.push(comment)
            })
        })
      })
  }
}
</script>

Code explanation

• Vue components: to create the post list, post detail, and comment section components.
• Fetch API: to retrieve data from the HackerNews API.
• v-for directive: to loop through the posts and comments and render them.

You can find more information about Vue.js and building a HackerNews clone here and here.

Edit this code on GitHub