How to use v-on:click.stop to stop event bubbling in Vue

Vue is a very popular JavaScript framework in the front-end community. It can help us build efficient, flexible and easy-to-maintain web applications. Event bubbling is a very common problem in Vue, because in complex applications, multiple components may share the same DOM element. In this case, it is very convenient to use the v-on:click.stop directive to stop event bubbling.

1. What is event bubbling?

Event bubbling means that when an event on a DOM element is triggered, it will first run the handler of the element, and then run the handler of the element's parent element step by step. This mechanism ensures coherence between elements, but sometimes we may not want the event to bubble up as it may cause the code to execute incorrectly.

2. How to use v-on:click.stop to stop event bubbling in Vue?

You can easily stop event bubbling using the v-on:click.stop directive. This directive can be added to any Vue component. When the event is triggered, v-on:click.stop will call a function that will prevent the event from continuing to propagate upward.

<template>
  <div @click="parentClick">
    <div @click.stop="childClick">子组件</div>
  </div>
</template>

In the above code, we have a parent component and a child component, the event handler of the child component will be triggered when the child component is clicked. However, if you add a handler on a child component using the v-on:click.stop directive, the event will not continue to be propagated when the component is clicked.

3. Use the .stop modifier to stop event bubbling

We can also use the .stop modifier to complete the v-on:click.stop command in the same way. This modifier can be used on any event. For example:

<template>
  <div>
    <div @click="parentClick">
      <div @click.stop="childClick">子组件</div>
    </div>
    <div @click.stop="parentClick">父组件</div>
  </div>
</template>

In this example, there are two elements that can be clicked: the child element and the parent element. If you click on a child element it will prevent the event from bubbling up to the parent element. Likewise, it will prevent the event from bubbling into any other elements when the parent element is clicked.

4. Summary

In Vue, you can easily stop event bubbling by using the v-on:click.stop directive. This directive can be added to any Vue component and provides an easy way to handle interactions between elements. If you want to prevent the event from bubbling up into other elements, using the v-on:click.stop directive is a good choice. At the same time, we can also use the .stop modifier to complete the v-on:click.stop instruction in the same way.

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