Method to remove event definition in vue

How to remove event listeners in Vue? Determine the elements and event types to remove. Get a reference to the event handler function. Use the removeEventListener method to remove an event listener.

How to remove event listeners in Vue

In Vue.js, use removeEventListener Method to easily remove event listeners. The syntax is as follows:

<code class="js">element.removeEventListener(eventName, eventHandler);</code>

Where:

• element: The DOM element from which the event listener is to be removed.
• eventName: Event name, such as "click" or "submit".
• eventHandler: Event handling function.

Use steps

1. # to determine the element and event type for which you want to remove the event listener.
2. Get the reference of the event handler function to be removed. Typically, this is done in the mounted lifecycle hook of the component or instance.
3. Use the removeEventListener method to remove the event listener.

Example

The following code example demonstrates how to remove the "click" event listener in a Vue component:

<code class="js"><template>
  <button @click="handleClick">点击我</button>
</template>

<script>
  export default {
    mounted() {
      // 获取事件处理函数的引用
      const handleClick = this.$refs.button.handleClick;

      // 移除事件监听器
      this.$refs.button.removeEventListener('click', handleClick);
    },
  }
</script></code>

Remove namespace events

For colon-separated namespace events (such as @click.stop), you need to use removeEventListener Namespace version:

<code class="js">element.removeEventListener(eventName + '.' + namespace, eventHandler);</code>

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