• 默认

• 再次点击组件一按钮组件一面板隐藏，按钮样式也发生改变
  

• 切换按钮后,面板发生改变
  

1、同一组件中实现不同元素切换

<template>
  <div class="page">
    <div class="button">
      <span @click="show(1)"
            :class="index===1? 'active':''">组件一</span>
      <span @click="show(2)"
            :class="index===2? 'active':''">组件二</span>
      <span @click="show(3)"
            :class="index===3? 'active':''">组件三</span>
    </div>
    <!-- 面板一 -->
    <div class="one"
         v-show="index===1 && isShow">
    </div>
    <!-- 面板二 -->
    <div class="two"
         v-show="index===2 && isShow">
    </div>
    <!-- 面板三 -->
    <div class="three"
         v-show="index===3 && isShow">
    </div>
  </div>
</template>
<script>
export default {
  data () {
    return {
      // 控制切换按钮后按钮改变样式
      index: 1,
      // 控制点击按钮后子组件显示，再次点击隐藏
      isShow: true
    }
  },
  methods: {
    show (value) {
      this.index === value ? this.isShow = !this.isShow : this.isShow = true
      this.index = value
    }
  }
}
</script>
<style scoped lang="scss">
.page {
  padding: 20px;
  .button {
    span {
      display: inline-block;
      height: 40px;
      line-height: 40px;
      text-align: center;
      width: 100px;
      border: 1px solid #e6e6e6;
      cursor: pointer;
    }
    .active {
      color: #ffffff;
      background: rgb(49, 49, 238);
    }
  }
  .one {
    height: 300px;
    background: red;
  }
  .two {
    height: 300px;
    background: yellow;
  }
  .three {
    height: 300px;
    background: blue;
  }
}
</style>

2、利用< keep-alive >和< component >实现不同子组件切换，效果一样

子组件一：one.vue

<template>
  <div class="one-com">
    11111
  </div>
</template>
<style scoped lang="scss">
.one-com {
  height: 300px;
  background: red;
}
</style>

子组件二：two.vue

<template>
  <div class="one-com">
    22222
  </div>
</template>
<style scoped lang="scss">
.one-com {
  height: 300px;
  background: yellow;
}
</style>

子组件三：three.vue

<template>
  <div class="one-com">
    333333
  </div>
</template>
<style scoped lang="scss">
.one-com {
  height: 300px;
  background: blue;
}
</style>

父组件

<template>
  <div class="page">
    <div class="button">
      <span @click="show(1)"
            :class="index===1? 'active':''">组件一</span>
      <span @click="show(2)"
            :class="index===2? 'active':''">组件二</span>
      <span @click="show(3)"
            :class="index===3? 'active':''">组件三</span>
    </div>
    <div class="tab_content">
      <keep-alive>
        <component :is="comp"
                   v-show="isShow"></component>
      </keep-alive>
    </div>
  </div>
</template>
<script>
import one from '@/components/dynamic/one.vue'
import Two from '@/components/dynamic/two.vue'
import Three from '@/components/dynamic/three.vue'
export default {
  components: { one, Two, Three },
  data () {
    return {
      // 控制切换按钮后按钮改变样式
      index: 1,
      // 控制子组件显示
      comp: 'one',
      // 控制点击按钮后子组件显示，再次点击隐藏
      isShow: true
    }
  },
  methods: {
    show (value) {
      if (this.index === value) {
        this.index = 0
        this.isShow = !this.isShow
      } else {
        this.index = value
        this.isShow = true
      }
      if (value === 1) this.comp = 'one'
      if (value === 2) this.comp = 'two'
      if (value === 3) this.comp = 'three'
    }
  }
}
</script>
<style scoped lang="scss">
.page {
  .button {
    span {
      display: inline-block;
      height: 40px;
      line-height: 40px;
      text-align: center;
      width: 100px;
      border: 1px solid #e6e6e6;
      cursor: pointer;
    }
    .active {
      color: #ffffff;
      background: rgb(49, 49, 238);
    }
  }
}
</style>