Element Carousel 走马灯的具体实现

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本文来源于Element官方文档：

http://element-cn.eleme.io/#/zh-CN/component/carousel

基础用法

普通走马灯

<div class="block">
<span class="demonstration">默认 Hover 指示器触发</span>
<el-carousel height="150px">
<el-carousel-item v-for="item in 4" :key="item">
<h3>{{ item }}</h3>
</el-carousel-item>
</el-carousel>
</div>
<div class="block">
<span class="demonstration">Click 指示器触发</span>
<el-carousel trigger="click" height="150px">
<el-carousel-item v-for="item in 4" :key="item">
<h3>{{ item }}</h3>
</el-carousel-item>
</el-carousel>
</div>

组件— 走马灯

基础用法

<template>
 <div class="block">
  <span class="demonstration">默认 Hover 指示器触发</span>
  <el-carousel height="150px">
   <el-carousel-item v-for="item in 4" :key="item">
    <h3 class="small">{{ item }}</h3>
   </el-carousel-item>
  </el-carousel>
 </div>
 <div class="block">
  <span class="demonstration">Click 指示器触发</span>
  <el-carousel trigger="click" height="150px">
   <el-carousel-item v-for="item in 4" :key="item">
    <h3 class="small">{{ item }}</h3>
   </el-carousel-item>
  </el-carousel>
 </div>
</template>

<style>
 .el-carousel__item h3 {
  color: #475669;
  font-size: 14px;
  opacity: 0.75;
  line-height: 150px;
  margin: 0;
 }

 .el-carousel__item:nth-child(2n) {
   background-color: #99a9bf;
 }
 
 .el-carousel__item:nth-child(2n+1) {
   background-color: #d3dce6;
 }
</style>

指示器

<template>
 <div class="block">
  <span class="demonstration">默认 Hover 指示器触发</span>
  <el-carousel height="150px">
   <el-carousel-item v-for="item in 4" :key="item">
    <h3 class="small">{{ item }}</h3>
   </el-carousel-item>
  </el-carousel>
 </div>
 <div class="block">
  <span class="demonstration">Click 指示器触发</span>
  <el-carousel trigger="click" height="150px">
   <el-carousel-item v-for="item in 4" :key="item">
    <h3 class="small">{{ item }}</h3>
   </el-carousel-item>
  </el-carousel>
 </div>
</template>

<style>
 .el-carousel__item h3 {
  color: #475669;
  font-size: 14px;
  opacity: 0.75;
  line-height: 150px;
  margin: 0;
 }

 .el-carousel__item:nth-child(2n) {
   background-color: #99a9bf;
 }
 
 .el-carousel__item:nth-child(2n+1) {
   background-color: #d3dce6;
 }
</style>

切换箭头

<template>
 <div class="block">
  <span class="demonstration">默认 Hover 指示器触发</span>
  <el-carousel height="150px">
   <el-carousel-item v-for="item in 4" :key="item">
    <h3 class="small">{{ item }}</h3>
   </el-carousel-item>
  </el-carousel>
 </div>
 <div class="block">
  <span class="demonstration">Click 指示器触发</span>
  <el-carousel trigger="click" height="150px">
   <el-carousel-item v-for="item in 4" :key="item">
    <h3 class="small">{{ item }}</h3>
   </el-carousel-item>
  </el-carousel>
 </div>
</template>

<style>
 .el-carousel__item h3 {
  color: #475669;
  font-size: 14px;
  opacity: 0.75;
  line-height: 150px;
  margin: 0;
 }

 .el-carousel__item:nth-child(2n) {
   background-color: #99a9bf;
 }
 
 .el-carousel__item:nth-child(2n+1) {
   background-color: #d3dce6;
 }
</style>

卡片化

<template>
 <el-carousel :interval="4000" type="card" height="200px">
  <el-carousel-item v-for="item in 6" :key="item">
   <h3 class="medium">{{ item }}</h3>
  </el-carousel-item>
 </el-carousel>
</template>

<style>
 .el-carousel__item h3 {
  color: #475669;
  font-size: 14px;
  opacity: 0.75;
  line-height: 200px;
  margin: 0;
 }
 
 .el-carousel__item:nth-child(2n) {
  background-color: #99a9bf;
 }
 
 .el-carousel__item:nth-child(2n+1) {
  background-color: #d3dce6;
 }
</style>

方向

<template>
 <el-carousel height="200px" direction="vertical" :autoplay="false">
  <el-carousel-item v-for="item in 3" :key="item">
   <h3 class="medium">{{ item }}</h3>
  </el-carousel-item>
 </el-carousel>
</template>

<style>
 .el-carousel__item h3 {
  color: #475669;
  font-size: 14px;
  opacity: 0.75;
  line-height: 200px;
  margin: 0;
 }
 
 .el-carousel__item:nth-child(2n) {
  background-color: #99a9bf;
 }
 
 .el-carousel__item:nth-child(2n+1) {
  background-color: #d3dce6;
 }
</style>

Carousel Attributes

参数	说明	类型	可选值	默认值
height	走马灯的高度	string	—	—
initial-index	初始状态激活的幻灯片的索引，从 0 开始	number	—	0
trigger	指示器的触发方式	string	click	—
autoplay	是否自动切换	boolean	—	true
interval	自动切换的时间间隔，单位为毫秒	number	—	3000
indicator-position	指示器的位置	string	outside/none	—
arrow	切换箭头的显示时机	string	always/hover/never	hover
type	走马灯的类型	string	card	—

Carousel Events

事件名称	说明	回调参数
change	幻灯片切换时触发	目前激活的幻灯片的索引，原幻灯片的索引

Carousel Methods

方法名	说明	参数
setActiveItem	手动切换幻灯片	需要切换的幻灯片的索引，从 0 开始；或相应 el-carousel-item 的 name 属性值
prev	切换至上一张幻灯片	—
next	切换至下一张幻灯片	—