vue3的element-plus在外部自定义指示器切换轮播图(走马灯)

<template>
  <div class="carousel-container">
    <p style="text-align: center">----- 自定义指示器 -----</p>
    <div class="custom-indicator">
      <div
        v-for="(item, index) in 4"
        :key="index"
        :class="{ active: currentIndex === index }"
        @click="changeIndicator(index)"
      ></div>
    </div>
    <p style="text-align: center">----- 内容 -----</p>
    <el-carousel
      ref="carousel"
      v-model="currentIndex"
      :initial-index="currentIndex"
      :interval="10000"
      indicator-position="none"
      arrow="never"
      @change="changeHandle"
    >
      <el-carousel-item v-for="(item, index) in 4" :key="index">
        内容 {
  { item }}
      </el-carousel-item>
    </el-carousel>
  </div>
</template>

<script setup>
import { ref } from 'vue'
const carousel = ref()
const currentIndex = ref(0)

// 轮播图自动切换，赋值为自定义指示器
const changeHandle = (e) => {
  currentIndex.value = e
}
// 通过自定义指示器切换，赋值给轮播图
const changeIndicator = (index) => {
  carousel.value.setActiveItem(index)
  currentIndex.value = index
}
</script>

<style>
.carousel-container {
  position: relative;
}

.custom-indicator {
  display: flex;
  justify-content: center;
  margin-top: 10px;
}

.el-carousel__item h3 {
  color: #475669;
  opacity: 0.75;
  line-height: 150px;
  margin: 0;
  text-align: center;
}

.el-carousel__item:nth-child(2n) {
  background-color: #99a9bf;
}

.el-carousel__item:nth-child(2n + 1) {
  background-color: #d3dce6;
}

.custom-indicator div {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #ccc;
  margin: 0 5px;
  cursor: pointer;
}

.custom-indicator div.active {
  background-color: #333;
}
</style>