vue v-for实现hover,active的点击、鼠标悬停的效果

1、在template中:

<div class="link-list">
	<ul>
		<li
		class="link-item"
		:class="{'link-item-active': item.id == activeLinkId,'link-item-hover':index==hoverIndex}"
		v-for="(item,index) in  linkGroupData"
		:key="index"
		@click="switchActiveLink(item)"
		@mouseover="hoverIndex = index"
		@mouseout="hoverIndex = -1">
		{{item.name}}
		</li>
	</ul>
</div>

tips多个class类名,可用连写在{}中,逗号隔开;
2、在data中定义两个索引值:

hoverIndex: -1, // 菜单hover索引
activeLinkId: 0, // 当前激活的菜单id

3、在css中写两个样式:

 .link-item-hover {
        background-color: #f5f7fa;
      }
      .link-item-active {
        // 链接菜单激活样式
        color: #fff;
        background-color: #b3cae4;
      }

参考文章:
https://www.jianshu.com/p/6f841d5a6090

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