vue_0">vue之父组件向子组件传值

vue中pros官方解释

问题描述：在做视频网站过程中发现每个视频的样式其实是大致相同的，所以就想着直接写个组件，但是又看不懂官网的传值，所以自己找了个视频看明白了。

• 想实现的效果：
  

具体实现代码：

• 父组件的代码：

    <!-- 注释的部分是之前没有用组件的代码 -->
	<!-- <ul class="videoList">
					<li v-for="item in videoList" :key="item.id" class="videoItem">
						 <el-card :body-style="{ padding: '0px' }">
							<img :src="item.src" class="image">
							<div style="padding: 14px;">
								<span class="videoTitle">{{ item.title }}</span>
								<div class="bottom clearfix">
									<span class="left" style="cursor: pointer;" @click="anchorDetail">{{ item.author }}</span>
									<span class="right">{{ item.count }}人在看</span>
								</div>
							</div>
						</el-card> 
						
					</li>
				</ul> -->
				<!-- 用组件之后的代码 -->
				<Video v-bind:newlists="videoList"></Video>

父组件中要定义好videoList

import Video from '@/components/frontend/videoItem'
	export default {
		components: {
			Video
		},
		data(){
		return {
		videoList: [{
						id: 0,
						title: "最美的官方",
						author: "贝壳官方",
						count: 300,
						src: require('../../../assets/img/homepage/1.png')
					},
					{
						id: 1,
						title: "最美的官方哈哈哈啊哈哈哈哈哈哈美的官方哈哈哈啊哈哈哈哈哈哈",
						author: "贝壳官方",
						count: 300,
						src: require('../../../assets/img/homepage/1.png')
					}, {
						id: 2,
						title: "最美的官方",
						author: "贝壳官方",
						count: 300,
						src: require('../../../assets/img/homepage/1.png')
					}, {
						id: 3,
						title: "最美的官方",
						author: "贝壳官方",
						count: 300,
						src: require('../../../assets/img/homepage/1.png')
					}, {
						id: 4,
						title: "最美的官方",
						author: "贝壳官方",
						count: 300,
						src: require('../../../assets/img/homepage/1.png')
					}, {
						id: 5,
						title: "最美的官方",
						author: "贝壳官方",
						count: 300,
						src: require('../../../assets/img/homepage/1.png')
					}, {
						id: 6,
						title: "最美的官方",
						author: "贝壳官方",
						count: 300,
						src: require('../../../assets/img/homepage/1.png')
					}, {
						id: 7,
						title: "最美的官方",
						author: "贝壳官方",
						count: 300,
						src: require('../../../assets/img/homepage/1.png')
					}
				]
		}
		}

• 子组件代码：

<template>
	<ul class="videoList">
		<li v-for="item in newlists" :key="item.id" class="videoItem">
			<el-card :body-style="{ padding: '0px' }">
				<img :src="item.src" class="image">
				<div style="padding: 14px;">
					<span class="videoTitle">{{ item.title }}</span>
					<div class="bottom clearfix">
						<span class="left" style="cursor: pointer;" @click="anchorDetail">{{ item.author }}</span>
						<span class="right">{{ item.count }}人在看</span>
					</div>
				</div>
			</el-card>
		</li>
	</ul>
</template>

<script>
	export default {
		// 父组件传过来的数据
		props: [
			"newlists"
		],
		// 自己的数据
		data() {
			return {

			}
		},
		methods: {
			anchorDetail() {
				this.$router.push('/anchor')
			}
		}
	}
</script>

<style scoped="scoped">
	/deep/.el-card.is-always-shadow,
	.el-card.is-hover-shadow:focus,
	.el-card.is-hover-shadow:hover {
		box-shadow: none;
	}

	.videoList {
		display: flex;
		flex-flow: wrap;
		justify-content: space-between;
	}

	.videoList .videoItem {
		width: 17.1875rem;
		margin-bottom: 10px;
	}

	.videoItem .image {
		width: 17.1875rem;
		height: 12.5rem;
	}

	.videoTitle {
		font-size: 14px;
		font-weight: bold;
		overflow: hidden;
		white-space: nowrap;
		text-overflow: ellipsis;
		display: inline-block;
		width: 245px;
	}

	.bottom {
		font-size: 14px;
	}

	.bottom .left {
		float: left;
	}

	.bottom .right {
		float: right;
	}
</style>

父组件中只要定义好<Video v-bind:newlists="videoList"></Video>中的videoList，并且把子组件导入进来就ok。

子组件需要props: [ "newlists" ],并且将v-for中的list改为newlists 即可。