element-ui 轮播图的使用
```
<template>
<div id="banner">
<!--动态将图片轮播图的容器高度设置成与图片一致-->
<el-carousel :height="bannerHeight + 'px'">
<!--遍历图片地址,动态生成轮播图-->
<el-carousel-item v-for="item in img_list" :key="item">
<img :src="item" alt />
</el-carousel-item>
</el-carousel>
</div>
</template>
<script>
export default {
name: "Banner",
data() {
return {
// 图片地址数组
img_list: ["./banner1", "./banner1", "./banner1", "./banner1"],
// 图片父容器高度
bannerHeight: 1000,
// 浏览器宽度
screenWidth: 0
};
},
methods: {
setSize: function() {
// 通过浏览器宽度(图片宽度)计算高度
this.bannerHeight = (400 / 1920) * this.screenWidth;
}
},
mounted() {
// 首次加载时,需要调用一次
this.screenWidth = window.innerWidth;
this.setSize();
// 窗口大小发生改变时,调用一次
window.onresize = () => {
this.screenWidth = window.innerWidth;
this.setSize();
};
}
};
</script>
<style scoped>
.el-carousel__item h3 {
color: #475669;
font-size: 14px;
opacity: 0.75;
line-height: 300px;
margin: 0;
}
.el-carousel__item:nth-child(2n) {
background-color: #99a9bf;
}
.el-carousel__item:nth-child(2n + 1) {
background-color: #d3dce6;
}
img {
/*设置图片宽度和浏览器宽度一致*/
width: 100%;
height: inherit;
}
</style>
```
