this.$emit("update:
时间: 2023-11-19 11:53:23 浏览: 33
this.$emit("update:prop", val)是Vue.js中的一个自定义事件,用于在子组件内部更新父组件的属性值。当子组件需要更新父组件的属性值时,可以通过触发这个事件来实现。在父组件中,可以通过监听这个事件来更新自己的属性值。这个事件通常与.sync修饰符一起使用,以便更方便地实现双向数据绑定。
相关问题
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>
#### 引用[.reference_title]
- *1* *2* [Vue.sync修饰符与this.$emit(‘update:xxx‘, newXXX)](https://blog.csdn.net/weixin_44102266/article/details/126761000)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT0_1"}}] [.reference_item style="max-width: 50%"]
- *3* [this.$emit](https://blog.csdn.net/m0_72790593/article/details/127455482)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT0_1"}}] [.reference_item style="max-width: 50%"]
[ .reference_list ]
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>
```