点击盒子外任意位置关闭当前盒子

<div @click="showpopup">
      <!-- <div> -->
        <BottomLeftChart />
 </div>
      <div id="" @click="closepopup">//需要显示与隐藏的div
        <div class="show" v-show="popup" id="popup" @click.self="closepopup!=closepopup">
          <div class="title">
            DIMM
          </div>
          <div class="center">
            <bigBottomLeftChart />
          </div>
        </div>
      </div>
 return {
        popup: 0,
      };
 methods: {
      showpopup() {
        this.popup = 1;
      },
      closepopup() {
        this.popup = 0;
      },
}

点击盒子（class="show"）外任意位置关闭当前盒子