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The difference between event and $event in vue
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- 2024-05-08 16:42:21558browse
In Vue.js, event is a native JavaScript event, triggered by the browser, and $event is a Vue-specific abstract event object, used in Vue components. It is generally more convenient to use $event because it is formatted and enhanced to support data binding. Use event when you need to access specific functionality of the native event object.
The difference between event and $event in Vue
In Vue.js, event and $event are two variables related to event processing. There are some key differences between them:
event
- ##event
is a native JavaScript event, Triggered by the browser.It contains information about the event, such as event type, target element, and event data. - You can use
- event
on any element that can receive an event handler, such as
$event
- ##$event
- is an abstract event object of Vue.js. Used to handle events in Vue components.
It contains the same information asevent - , but formatted and enhanced by Vue.js.
- can only be used within Vue components, via the
@eventNameevent handler or thev-ondirective.
event and when to use $event? Generally, it is better to use
as it provides the following advantages:
- Convenience:
- $event is Vue.js specific, so it is more convenient to use it in Vue components.
-
$event is always the same, regardless of the event type.
- You can use event.target.value and other
$eventproperties to perform data binding in the Vue model. Use
only if you need to access specific functionality of the native JavaScript event object (such as the preventDefault() method).
The following is an example of a Vue component using
$event to handle button click events: <pre class="brush:php;toolbar:false"><code class="javascript"><template>
<button @click="handleClick">Click Me</button>
</template>
<script>
export default {
methods: {
handleClick(event) {
console.log('Button clicked!', event.target.value);
}
}
}
</script></code></pre>The following Here is an example of using
to prevent a form submission event: <pre class="brush:php;toolbar:false"><code class="javascript"><template>
<form @submit="handleSubmit">
<input type="text" v-model="message">
<button type="submit">Submit</button>
</form>
</template>
<script>
export default {
data() {
return {
message: ''
};
},
methods: {
handleSubmit(event) {
event.preventDefault();
if (this.message) {
alert('Message submitted: ' + this.message);
}
}
}
}
</script></code></pre>
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