How to set up named slots in vue

Vue is a popular front-end framework, and one of its important features is slot. Slots allow us to dynamically insert the content of a component into other components. In Vue, slots are divided into two types: default slots and named slots. This article will focus on how to set up named slots in Vue.

1. Default slot

The default slot is the slot provided by Vue by default, which is marked with a special placeholder "slot". The default slot is used inside the component, which allows us to dynamically insert the content of the component into a specific location of the component. The default slot does not require any special settings, just add a "slot" placeholder to the component.

Component sample code:

<template>
   <div>
      <h1>这是一个默认插槽组件</h1>
      <slot></slot>
   </div>
</template>

In the above code, we added a "slot" placeholder inside the component to indicate that this is a default slot. When we use this component in other components, we can insert content in the "slot" tag, for example:

<template>
   <div>
      <my-component>
         <p>这是插入到默认插槽的内容</p>
      </my-component>
   </div>
</template>

In the above code, we insert a paragraph tag into the "my-component" component in the default slot.

2. Named slots

In addition to the default slots, Vue also provides another kind of slots-named slots. Named slots allow us to define multiple slots in a component, each with a unique name. Named slots are suitable for more complex components, such as container components that contain multiple sub-components. In Vue, we can define named slots through the "name" attribute of the "slot" tag.

Named slot sample code:

<template>
   <div>
      <h1>这是一个具名插槽组件</h1>
      <slot name="header"></slot>
      <div class="content">
         <slot></slot>
      </div>
      <slot name="footer"></slot>
   </div>
</template>

In the above code, we define three slots: a named slot with the name "header", a default slot with an empty name, and A named slot named "footer". We can use this component within other components and provide different content for each slot.

Sample code using named slots:

<template>
   <div>
      <my-component>
         <template v-slot:header>
            <h2>这是插入到header插槽中的内容</h2>
         </template>
         <p>这是插入到默认插槽中的内容</p>
         <template v-slot:footer>
            <p>这是插入到footer插槽中的内容</p>
         </template>
      </my-component>
   </div>
</template>

In the above code, we have used the "v-slot" directive to provide content for each named slot. With the "v-slot:header" directive, we insert a header tag into the named slot named "header". Through the "v-slot:footer" command, we insert a paragraph tag into the named slot named "footer". In the default slot, we inserted a paragraph tag.

Summary

Using slots in Vue allows us to reuse components more conveniently, while also improving the readability and maintainability of the code. In the process of using slots, we can choose to use default slots or named slots. Which type of slot to use depends on the requirements of the component. Named slots are a great choice if you need to define multiple slots in a component and provide specific content for each slot.

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