Vue封装Tabs标签页

原创已于 2022-04-11 11:04:11 修改 · 5k 阅读

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文章标签：

#vue.js #css #jquery

于 2021-08-25 16:36:25 首次发布

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示例一

组件Tabs：

<template>
  <div class="my-tabs">
    <div class="tabs-bar">
      <div class="tabs-bar-nav">
        <div
          class="tabs-tab"
          v-for="(tab, index) in tabList"
          :class="[tabIndex == tab.index ? 'tabs-active' : '']"
          :style="tab.style"
          @click="changeTab(tab)"
          :key="index"
        >
          {{ tab.name }}
        </div>
      </div>
    </div>
    <div class="tabs-content">
      <slot></slot>
    </div>
  </div>
</template>

<script>
export default {
  name: "MyTabs",
  props: {
    tabList: Array,
    tabIndex: Number,
  },
  data() {
    return {};
  },
  methods: {
    changeTab: function (tab) {
      this.$emit("changeTab", tab);
    },
  },
};
</script>

<style lang="less" scoped>
.my-tabs {
  font-size: 14px;
  color: #444;
}
.tabs-bar {
  border-bottom: 1px solid #eee;
  position: relative;
  padding: 5px 0;
}
.tabs-bar-nav {
  display: table;
  position: absolute;
  bottom: -1px;
  width: 100%;
}
.tabs-tab {
  min-width: 110px;
  padding: 5px 0;
  position: relative;
  display: inline-block;
  text-align: center;
  cursor: pointer;
}
.tabs-active {
  border-bottom: 1px solid #409eff;
  color: #409eff;
}
.tabs-content {
  padding-left: 20px;
  padding-right: 20px;
  padding-bottom: 30px;
}
</style>

引用组建Tabs：

<template>
  <div>
    <MyTabs :tabList="tabList" :tabIndex="tabIndex" @changeTab="changeTab">
      <div
        v-for="(item, index) in tabList"
        :key="index"
        :class="currentTab === item.index ? 'show' : 'hidden'"
      >
        {{ item.component }}
      </div>
    </MyTabs>
  </div>
</template>

<script>
import MyTabs from "../components/Tabs";

export default {
  name: "Tabs",
  data() {
    return {
      currentTab: 0,
      tabIndex: 0,
      currentContent: "one",
      tabList: [
        {
          index: 0,
          name: "选项一",
          component: "one",
          style: "width: 48%;",
        },
        {
          index: 1,
          name: "选项二",
          component: "two",
          style: "width: 48%;",
        },
      ],
    };
  },
  components: {
    MyTabs,
  },
  created() {},
  mounted() {},
  methods: {
    // 切换选项卡
    changeTab: function (tab) {
      this.tabIndex = tab.index;
      this.currentTab = tab.index;
    },
  },
};
</script>

<style lang="less" scoped>
.show {
  display: block;
}
.hidden {
  display: none;
}
</style>

示例二

组件tabs：

<template>
  <div class="header" ref="hhh">
    <div class="header_search-left">
      <!-- <slot name="header_tab_img"></slot> -->
    </div>
    <div class="header_tab" ref="headertab">
      <ul ref="tabitem">
        <li
          v-for="(item, index) in listArray"
          :key="index"
          :class="index == current ? 'activeheader' : ''"
          @click="changeTab(index, $event, item)"
        >
          {{ item.name }}
        </li>
      </ul>
    </div>
    <div class="header_search-right"></div>
  </div>
</template>

<script>
export default {
  name: "HeaderTab",
  props: {
    current: Number,
    listArray: {
      type: Array,
    },
  },
  data() {
    return {};
  },
  methods: {
    changeTab(index, e, item) {
      this.$emit("changeTab", item);
      this.current = index; // 高亮当前
      let tab = this.$refs.headertab; // 包裹 ul的 div
      let tabitem = this.$refs.tabitem; // 包裹 li的 ul
      let winWidth = this.$refs.hhh.clientWidth; // 当前屏幕的宽度
      let liList = e.target; // 当前点击的li
      if (liList) {
        //  当前li左偏移, li的宽度, 中间值(当前屏幕的宽度 - li的宽度) /2, 目标值 (中间值 - 当前li左偏移), 整个ul的宽度
        let liLeft = liList.offsetLeft,
          liWidth = liList.offsetWidth,
          liCenter = (winWidth - liWidth) / 2,
          liTarget = liLeft - liCenter;
        let ulWidth = tabitem.offsetWidth;
        if (liTarget < 0) {
          tab.scrollLeft = 0;
          return;
        }
        // winWidth(375) - ulWidth(436) =  -61
        if (liTarget < winWidth - ulWidth) {
          tab.scrollLeft = -(winWidth - ulWidth) + liWidth;
          return;
        }
        tab.scrollLeft = liTarget;
      }
    },
  },
};
</script>
<style lang="less" scoped>
.header {
  width: 100%;
  height: 40px;
  background-color: #fff;
  display: flex;
  border-radius: 8px;
  position: relative;
  overflow: hidden;
}
.header_tab {
  width: 90%;
  height: 40px;
  display: flex;
  flex-wrap: nowrap;
  overflow: scroll;
  padding-left: 19px;
  padding-right: 19px;
  // 平滑滚动
  transition: all 0.05s linear;
  scroll-behavior: smooth;
  scrollbar-width: none;
}
.header_tab::-webkit-scrollbar {
  display: none;
}
ul {
  display: inline-block;
  white-space: nowrap;
  margin: 0;
  padding-left: 0;
  padding-right: 19px;
  height: 40px;
}
li {
  display: inline-block;
  height: 40px;
  line-height: 40px;
  padding: 0px 10px;
  font-size: 14px;
  color: #333;
  cursor: pointer;
  // 点击高亮某一项时,将原来的字体变大,会导致没有高亮的元素距离底部有空隙,会出现纵向滚动条
  // margin-top: -1px;
}
.activeheader {
  font-size: 14px;
  color: #2b96ff;
  // font-weight: 700;
  position: relative;
  background: linear-gradient(
    180deg,
    rgba(71, 151, 220, 0) 0%,
    rgba(71, 151, 220, 0.35) 100%
  );
  &:after {
    position: absolute;
    content: "";
    width: 100%;
    height: 2px;
    /* bottom: 0; */
    left: calc(50% - 52px);
    background-color: #2b96ff;
    border-radius: 1px;
    height: 0.1rem;
    box-sizing: border-box;
    background-color: #3e75fc;
    position: absolute;
    left: 0;
    bottom: 0.05rem;
    z-index: 1;
    transition: transform 0.3s ease-in-out;
    transform-origin: 0 0;
  }
}
.header_search-left {
  width: 25px;
  height: 40px;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1000;
  background-image: -webkit-linear-gradient(
    to right,
    rgba(255, 255, 255, 1) 0%,
    rgba(255, 255, 255, 1) 55%,
    rgba(255, 255, 255, 1) 70%,
    rgba(255, 255, 255, 0.8) 80%,
    rgba(255, 255, 255, 0.3) 90%,
    rgba(255, 255, 255, 0.1) 100%
  );
  background-image: linear-gradient(
    to right,
    rgba(255, 255, 255, 1) 0%,
    rgba(255, 255, 255, 1) 55%,
    rgba(255, 255, 255, 1) 70%,
    rgba(255, 255, 255, 0.8) 80%,
    rgba(255, 255, 255, 0.3) 90%,
    rgba(255, 255, 255, 0.1) 100%
  );
  img {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: auto;
  }
}
.header_search-right {
  width: 25px;
  height: 40px;
  position: absolute;
  top: 0;
  right: 0;
  z-index: 1000;
  background-image: -webkit-linear-gradient(
    to left,
    rgba(255, 255, 255, 1) 0%,
    rgba(255, 255, 255, 1) 55%,
    rgba(255, 255, 255, 1) 70%,
    rgba(255, 255, 255, 0.8) 80%,
    rgba(255, 255, 255, 0.3) 90%,
    rgba(255, 255, 255, 0.1) 100%
  );
  background-image: linear-gradient(
    to left,
    rgba(255, 255, 255, 1) 0%,
    rgba(255, 255, 255, 1) 55%,
    rgba(255, 255, 255, 1) 70%,
    rgba(255, 255, 255, 0.8) 80%,
    rgba(255, 255, 255, 0.3) 90%,
    rgba(255, 255, 255, 0.1) 100%
  );
  img {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: auto;
  }
}
</style>

引用组件tabs：

<template>
  <div style="width: 400px">
    <header-tab :listArray="list" :current="current" @changeTab="changeTab">
    </header-tab>
    <div
      v-for="(item, index) in list"
      :key="index"
      :class="currentTab === item.id ? 'show' : 'hidden'"
    >
      {{ item.name }}
    </div>
  </div>
</template>

<script>
import HeaderTab from "../components/tabs";

export default {
  components: {
    HeaderTab,
  },
  data() {
    return {
      current: 0,
      currentTab: 0,
      list: [
        { id: 0, name: "测试1" },
        { id: 1, name: "测试2" },
        { id: 2, name: "测试3" },
        { id: 3, name: "测试4" },
        { id: 4, name: "测试5" },
        { id: 5, name: "测试6" },
        { id: 6, name: "测试7" },
        { id: 7, name: "测试8" },
        { id: 8, name: "测试9" },
        { id: 9, name: "测试10" },
        { id: 10, name: "测试11" },
        { id: 11, name: "测试12" },
        { id: 12, name: "测试13" },
        { id: 13, name: "测试14" },
        { id: 14, name: "测试15" },
        { id: 15, name: "测试16" },
        { id: 16, name: "测试17" },
        { id: 17, name: "测试18" },
        { id: 18, name: "测试19" },
      ],
    };
  },
  created() {},
  mounted() {},
  methods: {
    // 切换选项卡
    changeTab(tab) {
      this.current = tab.id;
      this.currentTab = tab.id;
    },
  },
};
</script>

<style lang="less" scoped>
.show {
  display: block;
}
.hidden {
  display: none;
}
</style>