Detailed example of chat room for communication between father and son in vue component-JS Tutorial-php.cn

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Detailed example of chat room for communication between father and son in vue component

Dec 26, 2017 pm 01:28 PM

components communication

This article mainly introduces in detail the creation of a comprehensive practice chat room for parent-child communication in the Vue component. It has a certain reference value. Interested friends can refer to it. I hope it can help everyone.

&lt;!doctype html&gt;
&lt;html&gt;
 &lt;head&gt;
 &lt;meta charset=&quot;UTF-8&quot;&gt;
 &lt;title&gt;组件父子间通信之综合练习&lt;/title&gt;
 &lt;script src=&quot;js/vue.js&quot;&gt;&lt;/script&gt;
 &lt;/head&gt;
 &lt;body&gt;
 &lt;p id=&quot;container&quot;&gt;
  &lt;p&gt;{{msg}}&lt;/p&gt;
  &lt;chat-room&gt;&lt;/chat-room&gt;
 &lt;/p&gt;
 &lt;script&gt;

// 创建父组件
  Vue.component(&quot;chat-room&quot;,{
  //data属性中的chatList保存用户聊天信息
   data:function(){
    return{
     chatList:[]
    }
   },
   template:`
    &lt;p&gt;
     //假的聊天室
     &lt;h1&gt;假的聊天室&lt;/h1&gt;
     &lt;user-component userName=&quot;Rose&quot;&gt;&lt;/user-component&gt;
     &lt;user-component userName=&quot;Jack&quot;&gt;&lt;/user-component&gt;
     //显示用户的聊天信息
     &lt;ul&gt;
      &lt;li v-for=&quot;tmp in chatList&quot;&gt;{{tmp}}&lt;/li&gt;
     &lt;/ul&gt;
    &lt;/p&gt;
   `
  })
 //创建子组件 
  Vue.component(&quot;user-component&quot;,{
   props:[&quot;userName&quot;],
   //通过v-model把用户输入的数据保存到userInput数组
   data:function(){
    return {
     userInput:[]
    }
   },
   methods:{
    //把用户输入的数据以及用户名label信息push给chatList数组
    sendChat:function(){
     this.$parent.chatList.push(this.userName+&quot;:&quot;+this.userInput);
     //情况input框
     this.userInput =&quot; &quot;;
    }
   },
   template:`
    &lt;p&gt;
     &lt;label&gt;{{userName}}&lt;/label&gt;
     &lt;input type=&quot;text&quot; v-model=&quot;userInput&quot;/&gt;
     &lt;button @click=&quot;sendChat&quot;&gt;发送&lt;/button&gt;
    &lt;/p&gt;
   `
  })
  new Vue({
   el:&quot;#container&quot;,
   data:{
    msg:&quot;Hello VueJs&quot;
   }
  })
 &lt;/script&gt;
 &lt;/body&gt;
&lt;/html&gt;

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Comprehensive exercise on inter-component communication:
(props down, events up)
There are 2 components: chat-room, user-component
user-component is composed of label input button
chat-room is composed of two user-component and a list

① Call user-component in chat-room to specify the name of the label
② In user-component,
When the button is clicked, the information entered by the current user is sent to the chat-room component, and chat-room receives the data and displays it in the list

Code:

&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head lang=&quot;en&quot;&gt;
 &lt;meta charset=&quot;UTF-8&quot;&gt;
 &lt;script src=&quot;js/vue.js&quot;&gt;&lt;/script&gt;
 &lt;title&gt;&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;

&lt;p id=&quot;container&quot;&gt;
 &lt;chat-room&gt;&lt;/chat-room&gt;
&lt;/p&gt;

&lt;script&gt;
 Vue.component(&#39;chat-room&#39;,{
  methods:{
   recvMsg:function(msg){
    console.log(&quot;在父组件中接收子组件传来的数据&quot;+msg);
    this.chatList.push(msg);
   }
  },
 data: function () {
  return {
  chatList:[]
  }
 },
 template:`
  &lt;p&gt;
    &lt;h1&gt;假的聊天室&lt;/h1&gt;
  &lt;ul&gt;
   &lt;li v-for=&quot;tmp in chatList&quot;&gt;
   {{tmp}}
   &lt;/li&gt;
  &lt;/ul&gt;
  &lt;user-component userName=&quot;Lucy&quot; @sendToFather=&quot;recvMsg&quot;&gt;&lt;/user-component&gt;
  &lt;user-component userName=&quot;Merry&quot; @sendToFather=&quot;recvMsg&quot;&gt;&lt;/user-component&gt;
  &lt;/p&gt;
  `
 })

 Vue.component(&#39;user-component&#39;,{
 props:[&#39;userName&#39;],
 data: function () {
  return {
  userInput:&#39;&#39;
  }
 },
 methods:{
  sendToFather: function () {
  //触发toFatherEvent的事件，把input中
  //用户输入的数据发送
  this.$emit(&quot;sendToFather&quot;,this.userName+&quot;:&quot;+this.userInput);
  }
 },
 template:`
  &lt;p&gt;
  &lt;label&gt;{{userName}}&lt;/label&gt;
  &lt;input type=&quot;text&quot; v-model=&quot;userInput&quot;/&gt;
  &lt;button @click=&quot;sendToFather&quot;&gt;发送&lt;/button&gt;
  &lt;/p&gt;
  `
 })
 new Vue({
 el: &#39;#container&#39;,
  data: {
  msg: &#39;Hello Vue&#39;
  }
 })
&lt;/script&gt;

&lt;/body&gt;
&lt;/html&gt;

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Related recommendations:

How to develop a chat room with PHP

Write multi-person real-time online chat with Node.js Room

How to create a simple chat room using php websocket

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