el-tooltip的使用（根据条件控制显示）

el-tooltip根据条件控制显示

一、列表型

代码如下：

<template>
  <div>
    <ul>
      <li v-for="(item, index) in listData" :key="item.id" class="item_box">
        <el-tooltip
          effect="dark"
          :content="item.content"
          :popper-class="isShowTooltip ? 'hide-tooltip' : ''"
        >
          <p class="item">
            <span
              @mouseenter.stop.prevent="onMouseOver(index)"
              @mouseleave.stop.prevent="isShowTooltip = true"
              :class="showMenuClass"
              >{{ item.content }}</span
            >
          </p>
        </el-tooltip>
      </li>
    </ul>
  </div>
</template>

<script>
import { defineComponent, reactive, toRefs } from "vue";
import DataJS from "@/JSON/data.js";
import $ from "jquery";
export default defineComponent({
  name: "page-five",
  setup() {
    const { DataJSON } = DataJS();
    const state = reactive({
      isShowTooltip: true,
      showMenuClass: "ref_" + Math.random().toString(7).substr(2),
    });
    let timer = null;
    function onMouseOver(index) {
      state.isShowTooltip = true;
      let data = null;
      data = $(`.${state.showMenuClass}`)[index];
      let parentWidth = data.parentNode.offsetWidth;
      let contentWidth = data.offsetWidth;
      clearTimeout(timer);
      timer = setTimeout(() => {
        if (contentWidth > parentWidth) {
          console.log(parentWidth, contentWidth);
          state.isShowTooltip = false;
        }
      }, 500);
    }
    return {
      ...toRefs(DataJSON),
      ...toRefs(state),
      onMouseOver,
    };
  },
});
</script>

<style>
.item_box {
  height: 35px;
  width: 400px;
  list-style-type: none;
}
.item {
  width: 100%;
  display: inline-block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
}
.hide-tooltip {
  visibility: hidden;
}
</style>

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效果展示：

二、树状图型

代码如下：

<template>
  <div class="tree_box">
    <el-tree :data="treeData">
      <template #default="{ node }">
        <el-tooltip
          effect="dark"
          :content="node.label"
          :popper-class="treeTooltip ? 'hide-tooltip' : ''"
        >
          <p class="tree_title" :class="showTreeClass + '-' + node.id">
            <span
              @mouseenter.stop.prevent="ellipsis(node.id)"
              @mouseleave.stop.prevent="treeTooltip = true"
              >{{ node.label }}</span
            >
          </p>
        </el-tooltip>
      </template></el-tree
    >
  </div>
</template>

<script>
import { defineComponent, reactive, toRefs } from "vue";
import TreeDataJS from "@/JSON/treeData.js";
import $ from "jquery";
export default defineComponent({
  name: "page-five",
  setup() {
    const { TreeDataJSON } = TreeDataJS();
    const state = reactive({
      treeTooltip: true,
      showTreeClass: "ref_" + Math.random().toString(7).substr(2),
    });
    // 树eltoop
    let treeTimer = null;
    function ellipsis(index) {
      let treeDataHtml = null;
      treeDataHtml = $(`.${state.showTreeClass + "-" + index}`)[0];
      let treeParentWidth = treeDataHtml.parentNode.offsetWidth;
      let treeContentWidth = treeDataHtml.offsetWidth;
      let treeLeft = treeDataHtml.offsetLeft;
      clearTimeout(treeTimer);
      treeTimer = setTimeout(() => {
        if (treeContentWidth + treeLeft + 4 > treeParentWidth) {
          state.treeTooltip = false;
        }
      }, 500);
    }
    return {
      ...toRefs(TreeDataJSON),
      ...toRefs(state),
      ellipsis,
    };
  },
});
</script>

<style>
.tree_box {
  margin-top: 90px;
  width: 500px;
}
.tree_title {
  display: inline-block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.hide-tooltip {
  visibility: hidden;
}

</style>
片
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效果展示：

注意：均要设置所设选择器的样式

.hide-tooltip {
	visibility: hidden;
}
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附JSON数据

// @/JSON/data.js
import { reactive } from "vue";
export default function () {
  const state = reactive({
    listData: [
      {
        id: 1,
        content: "你真的无法想象我就像是住在一个鱼缸",
      },
      {
        id: 2,
        content: "鱼缸旅馆里该有的什么都有",
      },
      {
        id: 3,
        content: "像一个小小的时空胶囊",
      },
      {
        id: 4,
        content: "那些说爱我的人,都可以清楚地追踪我,不像鱼无视目光只有鱼自己",
      },
      {
        id: 5,
        content:
          "我努力做他们热爱的我,我与陌生的自己窃窃私语,就像看到透明人一览无遗",
      },
      {
        id: 6,
        content:
          "我没有退缩也没有闪躲,当我流泪也没有人看穿,那些不爱我的人,也可以无谓地注视我,看我在鱼缸里因无聊而崩溃",
      },
      {
        id: 7,
        content: "我派无人飞机出去寻找,以为你会带来救兵的讯号",
      },
      {
        id: 8,
        content: "除了想你时吐出的气泡,我在机场冰冷等待拥抱",
      },
      {
        id: 9,
        content: "鱼缸里没有黑夜,我也失去了我的睡眠",
      },
      {
        id: 10,
        content:
          "我忘了我是水里游荡的王子,还是他已经溺毙的爱人,还是他已经溺毙的爱人",
      },
    ],
  });
  return {
    DataJSON: state,
  };
}
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// @/JSON/treeData.js
import { reactive } from "vue";
export default function () {
  const state = reactive({
    treeData: [
      {
        id:'1',
        label: "鱼缸旅馆",
        children: [
          {
            id:'1-1',
            label: "你真的无法想象我就像是住在一个鱼缸",
            children: [
              {
                id:'1-2',
                label: "鱼缸旅馆里该有的什么都有",
              },
              {
                id:'1-3',
                label: "像一个小小的时空胶囊",
              },
            ],
          },
        ],
      },
      {
        id:'2',
        label: "那些说爱我的人,都可以清楚地追踪我,不像鱼无视目光只有鱼自己",
        children: [
          {
            id:'2-1',
            label:
              "我努力做他们热爱的我,我与陌生的自己窃窃私语,就像看到透明人一览无遗",
            children: [
              {
                id:'21-1',
                label:
                  "我没有退缩也没有闪躲,当我流泪也没有人看穿,那些不爱我的人,也可以无谓地注视我,看我在鱼缸里因无聊而崩溃",
              },
              {
                id:'2-1-2',
                label: "我派无人飞机出去寻找,以为你会带来救兵的讯号",
              },
            ],
          },
          {
            id:'3',
            label: "除了想你时吐出的气泡,我在机场冰冷等待拥抱",
            children: [
              {
                id:'3-1',
                label: "鱼缸里没有黑夜,我也失去了我的睡眠",
              },
              {
                id:'3-2',
                label:
                  "我忘了我是水里游荡的王子,还是他已经溺毙的爱人,还是他已经溺毙的爱人",
              },
            ],
          },
        ],
      },
    ],
  });
  return {
    TreeDataJSON: state,
  };
}

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