Detailed explanation of chat room examples for communication between parent and child in Vue component

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.

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

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