Encapsulate your own breadcrumb component

Element-ui breadcrumb structure

<el-breadcrumb separator="/">
  <el-breadcrumb-item :to="{ path: '/' }">Home page</el-breadcrumb-item>
  <el-breadcrumb-item><a href="/">Activity management</a></el-breadcrumb-item>
  <el-breadcrumb-item>List of activities</el-breadcrumb-item>
  <el-breadcrumb-item>Event details</el-breadcrumb-item>
</el-breadcrumb>
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# Self-encapsulating breadcrumb component

Encapsulate the base components firstmy-bread-item.vue

<template>
  <div class="my-bread-item">// If there is a router-link tag, wrap it with the span tag<RouterLink v-if="to" :to="to"><slot /></RouterLink>
    <span v-else><slot /></span>
  </div>
</template>
<script>
export default {
  name: 'MyBreadItem'.props: {
    to: {
      type: [String.Object]}}}</script>
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Encapsulate the parent container componentmy-bread.vue

<script>
import { h } from 'vue'
export default {
  name: 'MyBread'.render() {
    // render render option, which is a function that returns the default function (h) of createElement, which is used to create the structure
    // The render function returns render as component content. It has a higher priority
    // Vue2.0 h functions are imported, vue3.0 h functions are imported
    
    // 1. Create the parent container of my-bread
    // 2. Obtain the content of the default slot
    // 3. Remove the I tag from the my-bread-item component because it is organized by the render function
    // 4. Create a dynamically created node by traversing the item in the slot
    // 5. Render the dynamically created node into the my-bread tag
    const items = this.$slots.default().filter(item= > item.type.name === 'MyBrandItem')
    const context = []
    items.forEach((item, i) = > {
      context.push(item)
      if (i < items.length - 1) {
        context.push(h('i', { class: 'iconfont icon-angle-right' }, null))}})return h('div', { class: 'My-bread' }, context)
  }
}
</script>

<style scoped lang="less">
.My-bread {
  display: flex;
  padding: 25px 10px;
  :deep(&-item) {
    a {
      color: # 666;
      transition: all 0.4 s;
      &:hover {
        color: @MyColor; }}} :deep(i) {
    font-size: 12px;
    margin-left: 5px;
    margin-right: 5px;
    line-height: 22px; }}</style>
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To the parent container componentmy-bread.vueJSX optimization

<script>
export default {
  name: 'MyBread'.render() {
    const items = this.$slots.default().filter(item= > item.type.name === 'MyBrandItem')
    const context = []
    items.forEach((item, i) = > {
      context.push(item)
      if (i < items.length - 1) {
        context.push(<i className='iconfont icon-angle-right'></i>)}})return <div className='my-bread'>{results}</div>
  }
}
</script>

<style scoped lang="less">
.My-bread {
  display: flex;
  padding: 25px 10px;
  :deep(&-item) {
    a {
      color: # 666;
      transition: all 0.4 s;
      &:hover {
        color: @MyColor; }}} :deep(i) {
    font-size: 12px;
    margin-left: 5px;
    margin-right: 5px;
    line-height: 22px; }}</style>
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Using the component

The props property to bread crumbs can be passed if there is a jump path. The parameter takes strings or path objects

<MyBread>
  <MyBreadItem to="/">The home page</MyBreadItem>
  <MyBreadItem>The secondary</MyBreadItem>
  <MyBreadItem>Level 3</MyBreadItem>
</MyBread>
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