Home > Web Front-end > Vue.js > body text

The difference between event and $event in vue

下次还敢
Release: 2024-05-08 16:42:21
Original
491 people have browsed it

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

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 as
  • event
  • , but formatted and enhanced by Vue.js.
  • $event
  • can only be used within Vue components, via the @eventName event handler or the v-on directive.
When to use

event and when to use $event? Generally, it is better to use

$event

as it provides the following advantages:

    Convenience:
  • $event is Vue.js specific, so it is more convenient to use it in Vue components.
  • Normalization: The format of
  • $event is always the same, regardless of the event type.
  • Data binding:
  • You can use event.target.value and other $event properties to perform data binding in the Vue model.
  • Use
event

only if you need to access specific functionality of the native JavaScript event object (such as the preventDefault() method).

Example

The following is an example of a Vue component using

$event

to handle button click events: <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">&lt;code class=&quot;javascript&quot;&gt;&lt;template&gt; &lt;button @click=&quot;handleClick&quot;&gt;Click Me&lt;/button&gt; &lt;/template&gt; &lt;script&gt; export default { methods: { handleClick(event) { console.log('Button clicked!', event.target.value); } } } &lt;/script&gt;&lt;/code&gt;</pre><div class="contentsignin">Copy after login</div></div>The following Here is an example of using

event

to prevent a form submission event: <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">&lt;code class=&quot;javascript&quot;&gt;&lt;template&gt; &lt;form @submit=&quot;handleSubmit&quot;&gt; &lt;input type=&quot;text&quot; v-model=&quot;message&quot;&gt; &lt;button type=&quot;submit&quot;&gt;Submit&lt;/button&gt; &lt;/form&gt; &lt;/template&gt; &lt;script&gt; export default { data() { return { message: '' }; }, methods: { handleSubmit(event) { event.preventDefault(); if (this.message) { alert('Message submitted: ' + this.message); } } } } &lt;/script&gt;&lt;/code&gt;</pre><div class="contentsignin">Copy after login</div></div>

The above is the detailed content of The difference between event and $event in vue. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!