How to call the method of child component in vue parent component

Calling method: 1. In the parent component, directly call the child component's method through ref; 2. In the parent component, call through the component's "$emit" and "$on" methods.

The operating environment of this tutorial: windows7 system, vue2.9.6 version, DELL G3 computer.

How to directly call the child component in the parent component in the Vue project:

Option 1: Directly call the child through ref Component method;

//父组件中   //子组件中  

Option 2: Through the $emit and $on methods of the component;

//父组件中   //子组件中  

Related recommendations: "vue.js Tutorial》

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