this.$emit('update)
时间: 2023-10-14 21:04:17 浏览: 34
这是Vue.js中的一个常见代码片段,它用于触发一个自定义事件。在这个例子中,`this.$emit('update')`会触发一个名为"update"的事件,可以在父组件中使用`v-on`指令来监听并处理该事件。请注意,这里的代码片段是不完整的,通常会有更多的参数传递给`$emit`方法来提供更多的信息。
相关问题
this.$emit update
This code snippet is using Vue.js, a popular JavaScript framework for building user interfaces. The `$emit` method is used to emit an event from a child component to its parent component. In this case, the parent component is listening for the `update` event and will execute the corresponding code when it receives the event.
Here's an example of how you might use this code in a Vue.js component:
```javascript
// Child component
this.$emit('update');
```
And in the parent component, you would listen for the `update` event and handle it accordingly:
```javascript
// Parent component
<template>
<div>
<!-- Your template code here -->
</div>
</template>
<script>
export default {
mounted() {
this.$on('update', () => {
// Code to execute when the update event is received
console.log('Update event received');
});
},
};
</script>
```
this.$emit('update:
this.$emit('update:isShow', false) 是子组件中的代码,它的作用是在子组件中触发一个名为"update:isShow"的自定义事件,并将false作为参数传递给父组件。
this.$emit('update:visible', false) 是另一个子组件中的代码,它的作用是在子组件中触发一个名为"update:visible"的自定义事件,并将false作为参数传递给父组件。
在父组件和子组件之间传递值时,如果想要在子组件中改变父组件的值,可以在父组件中使用.sync修饰符。具体语法是:this.$emit('update:props中的值',要改变的值)。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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