What is the role of slots in vue

Slots in Vue.js allow components to insert custom content, achieving code reuse and flexibility. How slots work: The parent component creates the slot via <slot>. Child components insert content into parent component slots via <template> and v-slot. Slots can be given a name using the name attribute to make it clear where to insert them. Function: Code reuse flexibility Content separation Communication between components For example, you can create reusable form components, custom titles and submit buttons.

The role of slots in Vue.js

Slots are an important part of Vue.js functionality, which allows custom content to be inserted within components, allowing for code reuse and flexibility.

How slots work

In the parent component, slots can be created via the <slot> tag. A slot defines a placeholder that child components can fill. In the child component, insert content into the slot of the parent component through the <template> tag and the v-slot directive, as shown below:

<!-- 父组件 -->
<my-component>
  <slot name="header"></slot>
  <slot name="content"></slot>
  <slot name="footer"></slot>
</my-component>

<!-- 子组件 -->
<template>
  <div>
    <h1 v-slot:header>插槽标题</h1>
    <p v-slot:content>插槽内容</p>
    <button v-slot:footer>按钮</button>
  </div>
</template>

Named Slots

Slots can be named using the name attribute, which allows you to more clearly specify where to insert content. For example, in the example above, we used the header, content, and footer names to specify the location of the slot.

Function

The slot has the following functions in Vue.js:

• Code reuse:Pass Create slots where parent components can define a reusable template structure and child components can insert their own content.
• Flexibility: Slots allow child components to customize the parent component's layout and behavior according to their own needs.
• Content separation: Slots separate content from the component's implementation, which improves maintainability and readability.
• Inter-component communication: Through slots, child components can pass data or events to parent components and vice versa.

Example

For example, we can use slots to create a reusable form component:

<!-- 父组件 -->
<my-form>
  <template v-slot:title><h2>填写表单</h2></template>
  <template v-slot:submit-button><button type="submit">提交</button></template>
</my-form>

<!-- 子组件 -->
<template>
  <form>
    {{ title }}
    <input type="text" placeholder="姓名" />
    <input type="email" placeholder="电子邮件" />
    {{ submitButton }}
  </form>
</template>

By using slots, We can customize the form's title and submit button without breaking the structure of the parent component.

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