完整代码：

<template>
  <div class="q-pa-md" style="position: relative;">
    <div ref="Getclick" v-show="menuVisible" :style="menuStyle" class="context-menu" @click="hideContextMenu">
      <q-btn color="primary" label="查看" />
    </div>
    <div style="width: 100%">
      <q-table title="Treats" :data="data" :columns="columns" row-key="name" @row-contextmenu="showContextMenu" />
    </div>
    <q-dialog v-model="Publicationcalendar">
      <q-card style="width: 1000px; max-width: 80vw">
        <q-card-section class="row items-center q-pb-none">
          <div class="text-h6">发布历史查询</div>
          <q-space />
          <q-btn icon="close" flat round dense v-close-popup />
        </q-card-section>

        <q-card-section>
          <div class="q-pa-md my-table">
            <q-table title="靠泊发布历史记录：" :data="data" :columns="releasehistoryColumns" row-key="name" />
          </div>
        </q-card-section>
        <q-card-section>
          <div class="q-pa-md my-table">
            <q-table title="离泊发布历史记录：" :data="data" :columns="ReleasehistoryColumns" row-key="name" />
          </div>
        </q-card-section>
      </q-card>
    </q-dialog>
  </div>
</template>

<script>
export default {
  data () {
    return {
      Publicationcalendar: false,
      menuVisible: false,
      menuStyle: {
        top: "0px",
        left: "0px",
      },
      columns: [
        {
          name: 'name',
          required: true,
          label: 'Dessert (100g serving)',
          align: 'left',
          field: row => row.name,
          format: val => `${val}`,
          sortable: true
        },
        { name: 'calories', align: 'center', label: 'Calories', field: 'calories', sortable: true },
        { name: 'fat', label: 'Fat (g)', field: 'fat', sortable: true },
        { name: 'carbs', label: 'Carbs (g)', field: 'carbs' },

      ],
      data: [
        {
          name: 'Frozen Yogurt',
          calories: 159,
          fat: 6.0,
          carbs: 24,
          protein: 4.0,
          sodium: 87,
          calcium: '14%',
          iron: '1%'
        },
        {
          name: 'Ice cream sandwich',
          calories: 237,
          fat: 9.0,
          carbs: 37,
          protein: 4.3,
          sodium: 129,
          calcium: '8%',
          iron: '1%'
        },
        {
          name: 'Eclair',
          calories: 262,
          fat: 16.0,
          carbs: 23,
          protein: 6.0,
          sodium: 337,
          calcium: '6%',
          iron: '7%'
        },
        {
          name: 'Cupcake',
          calories: 305,
          fat: 3.7,
          carbs: 67,
          protein: 4.3,
          sodium: 413,
          calcium: '3%',
          iron: '8%'
        },
        {
          name: 'Gingerbread',
          calories: 356,
          fat: 16.0,
          carbs: 49,
          protein: 3.9,
          sodium: 327,
          calcium: '7%',
          iron: '16%'
        },
        {
          name: 'Jelly bean',
          calories: 375,
          fat: 0.0,
          carbs: 94,
          protein: 0.0,
          sodium: 50,
          calcium: '0%',
          iron: '0%'
        },
        {
          name: 'Lollipop',
          calories: 392,
          fat: 0.2,
          carbs: 98,
          protein: 0,
          sodium: 38,
          calcium: '0%',
          iron: '2%'
        },


        {
          name: 'KitKat',
          calories: 518,
          fat: 26.0,
          carbs: 65,
          protein: 7,
          sodium: 54,
          calcium: '12%',
          iron: '6%'
        }
      ]
    }
  },
  mounted () {
    document.addEventListener(
      "click",
      (e) => {
        let variable = this.$refs.Getclick;
        if (!variable?.contains(e.target)) {
          this.menuVisible = false;
        }
      },
      true
    );
  },
  methods: {
    hideContextMenu () {
      this.menuVisible = false;
      this.Publicationcalendar = true;
    },
    showContextMenu (event, props) {
      event.preventDefault();
      this.menuData = props.row;
      this.menuVisible = true;
      const scrollX =
        document.documentElement.scrollLeft || document.body.scrollLeft;
      const scrollY =
        document.documentElement.scrollTop || document.body.scrollTop;
      this.menuStyle.top = event.clientY - 100 + scrollY + "px";
      this.menuStyle.left = event.clientX - 220 + scrollX + "px";

    },
  }
}
</script>
<style leng="scss" scoped>
.context-menu {
  position: absolute;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.26);
  z-index: 99999;
  top: 0;
  left: 0;
}
</style>

效果图：