vue多级侧边栏封装_vue2侧边栏封装

父组件

// 左侧导航菜单封装
<template>
  <div class="nav">
    <Menu @handleLink="handleLink" :list="list">
    </Menu>
    <div>{{value}}</div>
  </div>
</template>

<script>
import Menu from '@/components/Menu.vue'
  export default {
    components:{
      Menu
    },
    data(){
      return {
        value: '',
        list: [
          {
            name: '导航1',
            child: [
              {
                name: '选项1',
                child: [
                  {
                    name: '选项1-1',
                    url: 'aaa-1'
                  },
                  {
                    name: '选项2-1',
                    url: 'bbb-1'
                  },
                  {
                    name: '选项3-1',
                    url: 'ccc-1'
                  },
                ]
              },
              {
                name: '选项2',
                url: 'bbb'
              },
              {
                name: '选项3',
                url: 'ccc'
              },
              {
                name: '选项4',
                url: 'ddd'
              },
            ]
          },
          {
            name: '导航2',
            child: [
              {
                name: '选项1',
                url: 'aaa'
              },
              {
                name: '选项2',
                url: 'bbb'
              },
            ]
          },
          {
            name: '导航3',
            url: 'eee'
          },
          {
            name: '导航4',
          }
        ]
      }
    },
    
    methods: {
      handleLink($event,item,index){
        if(item.url){
          this.value = '跳转到' + item.url
        } else {
          if(item.isOpen == undefined){
            this.$set(item,'isOpen', true)
          } else {
            item.isOpen = !item.isOpen
          }
        }
      }
    }
  }
</script>

<style lang="less" scoped>
  *{
    margin: 0;
    padding: 0;
  }
  .nav{
    display: flex;
  }

</style>
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————————————————————————————————————————————————————
子组件

<template>
	<!-- 递归封装多级菜单栏 -->
	<div class="navMenu">
		<div
			v-for="(item, index) in list"
			class="item"
			@click.stop.prevent="handleLink($event, item, index)"
		>
			<div
				class="item-cont"
				:class="{ 'is-disabled': !(item.url || item.child) }"
			>
				{{ item.name }}
				<i class="icon" v-if="item.child"></i>
			</div>
			<div class="list-child" :class="{ active: !item.isOpen }" v-if="item.child">
				<Menu
					:list="item.child"
					@handleLink="handleLink"
				></Menu>
			</div>
		</div>
	</div>
</template>

<script>
export default {
	name: "Menu",
	props: {
		list: {
			type: Array,
			default: [],
		},
	},
	methods: {
		handleLink($event, item, index) {
			this.$emit("handleLink", $event, item, index);
		},
	},
};
</script>

<style lang="less" scoped>
.navMenu {
	height: auto;
	background: #fff;
	cursor: pointer;
	.item {
		width: 200px;
		color: black;
		.child,
		.item-cont {
			min-height: 50px;
			line-height: 50px;
			position: relative;
			&:hover {
				background: #94bce4;
			}
			&.is-disabled {
				opacity: 0.25;
				cursor: not-allowed;
			}
			.icon {
				content: "";
				border: 8px solid;
				border-color: #f00 transparent transparent transparent;
				position: absolute;
				top: calc(50% - 4px);
				right: 0;
			}
		}
		.list-child {
			margin-left: 30px;
			&.active {
				display: none;
			}
		}
	}
}
</style>

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效果图

复制粘贴即可使用
如有更好的处理方法可以提出来