How to call other functions of vue function

There are four ways to call other functions in Vue: directly call functions within the same Vue instance. Pass the function through props. Emit events through $emit and call parent component functions. Use $refs to directly call a function on another component instance.

How to call other functions in Vue

In Vue, other functions can be called to perform various tasks within the component. This can be achieved in the following ways:

1. Call directly

If the function is defined within the same Vue instance, you can call it directly using the following syntax:

 <code class="javascript">this.myFunction();</code>

2. By props

If the function is defined in the parent component, you can pass it to the child component using props:

 <code class="javascript">// 父组件<template> <child-component :my-function="myFunction"></child-component> </template> <script> export default { methods: { myFunction() { /* ... */ } } } </script> // 子组件<template> <button>调用父组件函数</button> </template> <script> export default { props: [&#39;myFunction&#39;], methods: { myFunction() { /* ... */ } } } </script></code>

3. By $emit

If the function is defined in the child component, you can use the $emit method to emit the event to the parent component, thereby calling the function in the parent component:

 <code class="javascript">// 子组件<template> <button>调用父组件函数</button> </template> <script> export default { methods: { myFunction() { /* ... */ } } } </script> // 父组件<template> <child-component v-on:my-event="myFunction"></child-component> </template> <script> export default { methods: { myFunction() { /* ... */ } } } </script></code>

4. By $refs

If you need to call a function on another component instance directly, you can use the $refs object:

 <code class="javascript"><template> <child-component ref="child"></child-component> </template> <script> export default { mounted() { this.$refs.child.myFunction(); } } </script></code>

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