What are the event modifiers in vue

Event modifiers in Vue allow extending the functionality of event handling functions: .stop: prevents events from bubbling. .prevent: Prevent default event behavior. .capture: Listen for events during the capture phase. .self: The event is only triggered when the target element is the current element. .once: Fire the event only once and remove the listener. .passive: Optimizes rendering performance, meaning the DOM is not modified. .native: Trigger native DOM events.

Event modifiers in Vue

Event modifiers in Vue allow us to add additional event handlers function to change its behavior. Here are some of the most commonly used event modifiers:

• .stop: Stops the event from bubbling up to the parent component.
• .prevent: Prevent default event behavior from being triggered, such as form submission or link navigation.
• .capture: Listen for events in the capture phase instead of the bubbling phase.
• .self: Only when the event is triggered, the target element is the current element.
• .once: Fires the event only once, then removes the event listener from the source element.
• .passive: Indicates that the event handler will not modify the DOM or prevent the browser's default behavior, thereby improving rendering performance.
• .native: Trigger native DOM events on the element instead of Vue's synthetic events.

Usage example:

<code class="vue"><button @click.stop="myMethod">按钮</button></code>

In this example, the .stop modifier is used to prevent the button click event from bubbling up to the parent components.

<code class="vue"><form @submit.prevent="myMethod">表单</form></code>

.prevent Modifier is used to prevent the form submission default behavior.

<code class="vue"><div @click.capture="myMethod">容器</div></code>

.capture Modifier is used to listen for click events in the container during the capture phase.

To use multiple modifiers, just concatenate them together:

<code class="vue"><a @click.stop.prevent="myMethod">链接</a></code>

This will prevent link navigation and prevent events from bubbling to the parent component.

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