前言

收起与展开的操作在开发中非常的常见，今天教大家用两种简单的方式实现这个小功能。

常规 css 实现

实现效果

源码如下

<template>
  <div class="maxBox">
    <!-- 左侧容器 -->
    <div class="leftBox" ref="leftNode">
      <div v-if="play">内容</div>
    </div>
    <!-- 点击容器 -->
    <div ref="btnNode" class="btnBox" @click="toggle" :title="title">
      <img v-if="play" src="https://i.postimg.cc/c4zMGwGj/sq.png" class="imageBox" />
      <img v-else src="https://i.postimg.cc/c4zMGwGj/sq.png" class="imageBox" />
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      play: true, //默认显示左侧容器
      title: "点击收起", //鼠标触摸提示文字
    };
  },
  methods: {
    toggle() {
      this.play = !this.play;
      //通过点击事件判断play的样式
      if (this.play) {
        this.$refs.btnNode.style =
          "transform:rotate(360deg);left:30%;transition:0.3s";
        this.$refs.leftNode.style = "width:30%;transition:0.3s";
        this.title = "点击收起";
      } else {
        this.$refs.btnNode.style =
          "transform:rotate(180deg);left:0px;transition:0.3s";
        this.$refs.leftNode.style = "width:0px;transition:0.3s";
        this.title = "点击展开";
      }
    },
  },
};
</script>

<style scoped>
/* 最外层的盒子 */
.maxBox {
  width: 100%;
  height: 100%;
  background: cornflowerblue;
  position: relative;
}
/* 左侧容器样式 */
.leftBox {
  position: absolute;
  width: 30%;
  height: 100%;
  background: cadetblue;
}
/* 点击容器样式 */
.btnBox {
  position: absolute;
  top: calc(50% - 40px);
  left: 30%;
  cursor: pointer;
  z-index: 999;
}
/* icon图片的样式 */
.imageBox {
  width: 35px;
  height: 80px;
}
</style>

通过 scss 实现

实现效果

源码如下

<template>
  <div class="parentBox">
    <!-- 弹出内容 -->
    <div class="leftSlide" v-show="!hideLeft">
      <div class="item">
        <h6>2000</h6>
        <p>第一行的标题</p>
      </div>
      <div class="item">
        <h6>8463</h6>
        <p>第二行的标题</p>
      </div>
      <div class="item">
        <h6>2187</h6>
        <p>第三行的标题</p>
      </div>
      <div class="item">
        <h6>4214</h6>
        <p>第四行的标题</p>
      </div>
      <div class="item">
        <h6>9824</h6>
        <p>第五行的标题</p>
      </div>
      <div class="item">
        <h6>1025</h6>
        <p>第六行的标题</p>
      </div>
    </div>
    <!-- 操作按钮 -->
    <div class="slideBtn" :class="hideLeft ? 'show' : 'hide'" @click="hideLeft = !hideLeft"></div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      hideLeft: true, //是否隐藏 slide
    };
  },
  mounted() {},
  methods: {},
};
</script>

<style lang="scss" scoped>
.parentBox {
  width: 100%;
  height: 100%;
  background: rgb(0, 25, 46);
  color: #c8c8c8;
  // 打开的容器
  .leftSlide {
    height: 45vh;
    width: 10vw;
    z-index: 999;
    // 自己用的时候换成本地图片
    background: url("https://i.postimg.cc/ZnbKZ0s5/bg-map-l.png");
    background-size: 100% 100%;
    background-color: rgba(11, 26, 62, 0.6);
    padding: 1vh 1vw 1vh 2vw;
    display: flex;
    flex-direction: column;
    .item {
      height: 7vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }
  }
  // 点击按钮
  .slideBtn {
    width: 1.3vw;
    height: 5.5vh;
    position: absolute;
    top: 19.8vh;
    z-index: 999;
    cursor: pointer;
    &.hide {
      // 自己用的时候换成本地图片
      background: url("https://i.postimg.cc/65TthkDg/sbtn.png");
      background-size: 100% 100%;
    }
    &.show {
      // 自己用的时候换成本地图片
      background: url("https://i.postimg.cc/zBD9GWN6/sbtn1.png");
      background-size: 100% 100%;
    }
  }
}
</style>