Vue component communication: using slots for content distribution

Vue component communication: using slots for content distribution

Foreword:
In Vue development, component communication is a very important part. Vue provides a variety of ways to communicate between components, among which using slots for content distribution is a very common and flexible way. This article will introduce how to use slots for component content distribution and provide code examples.

1. What is slot?
In Vue, slot is a special tag that can help us pass content from parent components to child components. Simply put, slot is like a placeholder. We can place any content in the slot in the parent component and process and render it in the child component.

2. Basic usage of using slots for content distribution

1. Define slots in the parent component
   In the parent component, we can use 58cb293b8600657fad49ec2c8d37b472

<template>
  <div>
    <Child>
      <slot></slot>
    </Child>
  </div>
</template>

2. Receive slot content in the child component
   In In child components, we can use the 58cb293b8600657fad49ec2c8d37b4727971cf77a46923278913ee247bc958ee tag to receive the content passed by the parent component, process and render it. For example, we receive the content passed by the parent component in the Child component and render it:

<template>
  <div>
    <p>子组件：</p>
    <slot></slot>
  </div>
</template>

3. Use slots with names
Sometimes, we may need to define multiple slot, and specify different content in the parent component. At this time, we can use named slots. For example, we have a parent component Parent and a child component Child. We want to pass two pieces of text from Parent to Child and process and render them separately in Child:

1. In the parent component Define a named slot
   In the parent component, we can use the 42faa67c9aeb21c0b163aae9370c90a87971cf77a46923278913ee247bc958ee tag to define a named slot. For example, we have two pieces of text that need to be passed:

<template>
  <div>
    <Child>
      <template v-slot:text1>
        <p>这是第一段文字。</p>
      </template>
      <template v-slot:text2>
        <p>这是第二段文字。</p>
      </template>
    </Child>
  </div>
</template>

2. Receive the slot content with name in the subcomponent
   In the subcomponent, we can use 306915e059abfa53710e03bade83d6e87971cf77a46923278913ee247bc958ee tag to receive the slot content with name, process and render it. For example:

<template>
  <div>
    <p>子组件：</p>
    <slot name="text1"></slot>
    <slot name="text2"></slot>
  </div>
</template>

4. Using scope slots
Sometimes, we need to pass some data in the parent component to the child component, and process and render based on the data in the child component. . At this time, we can use scope slots to achieve this. For example, we have a parent component Parent and a child component Child. We want to pass a list in Parent to Child and render it in Child based on the list:

1. Define the role in the parent component Domain Slot
   In the parent component, we can use the 8f3718d78a9d448bd4a6ca8c39a5c8fa21c97d3a051048b8e55e3c8f199a54b2 tag to define a scope slot and pass data to the child component. For example, we have a list that needs to be passed:

<template>
  <div>
    <Child>
      <template v-slot:list="scope">
        <ul>
          <li v-for="item in scope.list">{{ item }}</li>
        </ul>
      </template>
    </Child>
  </div>
</template>

2. Receive the data of the scope slot in the subcomponent
   In the subcomponent, we can pass the scope of the scope slot Property to get the data passed by the parent component. For example:

<template>
  <div>
    <p>子组件：</p>
    <slot :list="list"></slot>
  </div>
</template>

<script>
export default {
  data() {
    return {
      list: [1, 2, 3, 4, 5],
    };
  },
};
</script>

Summary:
Using slots for component content distribution is a very flexible and powerful way of component communication. By defining slots and using scope slots, we can implement data transfer and rendering between parent and child components. In actual development, choosing the appropriate slot usage according to specific needs can improve the maintainability and reusability of the code.

The above is the method and code example of using slots for content distribution. Hope this helps!

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