How to use Vue to implement Zhihu-like comment effects

How to use Vue to implement Zhihu-like comment effects

In recent years, the number of Zhihu users has been growing, and many people like to communicate with others on Zhihu. Share and discuss. Among them, the comment function is a very important part. The implementation of special effects for Zhihu comments is crucial to improving user experience and website attractiveness. In this article, we will introduce how to use Vue to implement Zhihu-like comment effects and provide specific code examples.

1. Basic Vue component structure

To implement Zhihu-like comment effects, you first need to establish a basic Vue component structure. Assume that our component is named Comment and has the following structure:

<template>
  <div class="comment">
    <!-- 评论内容展示区域 -->
    <div class="comment-content">{{ comment }}</div>
    
    <!-- 评论回复区域 -->
    <div class="comment-reply">
      <textarea v-model="reply"></textarea>
      <button @click="addReply">回复</button>
    </div>
    
    <!-- 子评论列表区域 -->
    <ul class="sub-comments">
      <li v-for="subComment in subComments">
        <Comment :comment="subComment"></Comment>
      </li>
    </ul>
  </div>
</template>

<script>
export default {
  name: 'Comment',
  props: {
    comment: String // 评论内容
  },
  data() {
    return {
      reply: '', // 回复内容
      subComments: [] // 子评论列表
    }
  },
  methods: {
    addReply() {
      // 添加回复到子评论列表
      this.subComments.push(this.reply);
      this.reply = ''; // 清空回复内容
    }
  }
}
</script>

<style scoped>
/* 样式省略 */
</style>

In the above code, we create a component named Comment through Vue's component definition method. This component includes a comment content display area, a comment reply area and a sub-comment list area. In the reply area, we use Vue's v-model directive to implement two-way data binding in order to obtain the reply content entered by the user in real time. In the sub-comment list area, we achieve infinite levels of sub-comment display by using recursive calls to the Comment component itself.

2. Using the Comment component in the parent component

Before using the Comment component, we need to create a parent component first, and call and render the Comment component through the parent component. Assume that our parent component is named App. The code example is as follows:

<template>
  <div class="app">
    <!-- 评论列表 -->
    <ul class="comments">
      <li v-for="comment in comments">
        <Comment :comment="comment"></Comment>
      </li>
    </ul>
  </div>
</template>

<script>
import Comment from './components/Comment.vue';

export default {
  name: 'App',
  components: {
    Comment
  },
  data() {
    return {
      comments: [] // 评论列表
    }
  },
  created() {
    // 初始化评论列表数据
    this.comments = [
      '这是一条评论1',
      '这是一条评论2'
    ];
  }
}
</script>

<style scoped>
/* 样式省略 */
</style>

In the above code, we create a parent component named App through Vue's component definition method. We initialize an initial comment list data in the created hook function and pass it as props of the Comment component. By using the v-for directive, we can render this comment data list into multiple Comment components to achieve Zhihu-like comment effects.

Conclusion

Through the above code examples, we can see how to use Vue to implement Zhihu-like comment effects. Vue's componentization features and two-way data binding mechanism allow us to easily implement complex interface interaction effects. Of course, in actual projects, more functional expansion and detail optimization may be required according to needs, but the code introduced in this article has provided you with a basic framework for operation, which can be used as the basis for further development. I hope this article can be helpful to students who are learning Vue.

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