vue单页应用 h5页面-吸顶效果-锚点定位-滚动到相应的位置激活tab

<template>
  <div>
    <div class="jiancha-header" id="boxFixed" :class="{'is_fixed' : isFixed}">
      <el-row class="jiancha-header-top">
        <i class="el-icon-arrow-left jiancha-header-i" @click="$router.go(-1);"></i>
        <span class="jiancha-header-span">检查阅读</span>
        <el-input v-model="input" prefix-icon="el-icon-search" placeholder="搜索检查项目"></el-input>
      </el-row>

      <div class="jiancha-header-title">
        <div class="jiancha-header-title">
          <div
            v-for="(item,key) in titleArr"
            :key="key"
            class="jiancha-header-title-div"
            @click="goAnchor(key)"
          >
            <a
              href="javascript:void(0)"
              :class="key === titleId ? 'jiancha-header-title-div-show' : ''"
            >{{item.name}}</a>
            <div
              style="20px;height:2px;background: #00A0E9;margin:0 auto;border-radius: 20px;"
              v-show="key === titleId"
            ></div>
          </div>
        </div>
      </div>
    </div>

    <div class="jiancha-content">
      <div class="jiancha-content-div" v-for="(item,key) in contentArr" :key="key" :id="'anchor'+key">
        <div class="jiancha-content-div-top">
          <div class="jiancha-content-div-top-left"></div>
          <div class="jiancha-content-div-top-right">{{item.name}}</div>
        </div>
        <div class="jiancha-content-div-content">
          <div
            class="jiancha-content-div-content-div"
            v-for="(item2,key2) in item.content"
            :key="key2"
            :id="item2.id"
          >
            <div class="jiancha-content-div-content-div-span">{{item2.title}}</div>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import "../../assets/css/jiancha/jiancha.css";
import { getJianChaMsg, getJianChaDetailMsg } from "@/api/jiancha";
export default {
  data() {
    return {
      input: "",
      titleArr: [],
      contentArr: [],
      titleId: 0,
      isFixed: false,
      offsetTopA: 0
    };
  },
  created() {
    this.initMsg();
  },
  mounted() {
    window.addEventListener("scroll", this.initHeight);
    this.$nextTick(() => {
      this.offsetTopA = document.querySelector("#boxFixed").offsetTop;
    });
  },
  methods: {
    goAnchor(index) {
      this.titleId = index;
      var anchor = this.$el.querySelector("#anchor" + index);
      document.body.scrollTop = anchor.offsetTop - 130;
      document.documentElement.scrollTop = anchor.offsetTop - 130;
    },
    checkTitle(val) {
      console.log(val);
      this.titleId = val;
    },
    initHeight(e) {
      var scrollTop =
        window.pageYOffset ||
        document.documentElement.scrollTop ||
        document.body.scrollTop;
      this.isFixed = scrollTop > this.offsetTopA ? true : false;
      let scrollItems = document.querySelectorAll('.jiancha-content-div')
      for (let i = scrollItems.length - 1; i >= 0; i--) {
        // 判断滚动条滚动距离是否大于当前滚动项可滚动距离
        let judge = scrollTop >= scrollItems[i].offsetTop - scrollItems[0].offsetTop - 130;
        if (judge) {
          this.titleId = i
          break
        }
      }
//       var anchorOffset0 = this.$el.querySelector('#anchor0').offsetTop-100
// 　　  var anchorOffset1 = this.$el.querySelector('#anchor1').offsetTop-100
//      var anchorOffset2 = this.$el.querySelector('#anchor2').offsetTop-100
// 　　  if(scrollTop>anchorOffset0&&scrollTop<anchorOffset1){
// 　　　　this.seeThis = 0
// 　　  }
// 　　  if(scrollTop>anchorOffset1&&scrollTop<anchorOffset2){
// 　　　　this.seeThis = 1
// 　　  }
// 　　  if(scrollTop>anchorOffset2){
// 　　　　this.seeThis = 2
// 　　  }
    },
    initMsg() {
      getJianChaMsg()
        .then(res => {
          console.log(res);
          this.titleArr = res.data.data.info.map(item => {
            return {
              id: item.id,
              name: item.name
            };
          });
          this.contentArr = res.data.data.info;
          console.log(this.contentArr);
        })
        .catch(err => {
          console.log(err);
        });
    }
  },
  destroyed() {
    window.removeEventListener("scroll", this.handleScroll);
  }
};
</script>

<style>
</style>

.jiancha-header {
   100%;
  background: #fff;
  //   padding-bottom: 20px;
  border-bottom: 1px solid #F0F0F0;

  .jiancha-header-top {
    padding-top: 30px;
    overflow: hidden;

    .jiancha-header-i {
      color: #000000;
      font-size: 22px;
      margin-left: 5px;
      font-weight: bold;
    }

    .jiancha-header-span {
      margin-left: 1%;
      font-size: 18px;
      font-weight: bold;
      color: #000;
    }

    .el-input {
       60%;
      margin-left: 5%;
    }

    .el-input__inner {
      border-radius: 21px;
      background: #F9F9F9;
    }

  }

  .jiancha-header-title {
    margin-top: 5px;
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;

    .jiancha-header-title-div {
      margin-left: 20px;
      line-height: 40px;
      text-align: center;
      white-space: nowrap;
      font-size: 16px;

      a {
        text-decoration: none;
        color: #A8A8A8;
      }

      a:active {
        color: #00A0E9;
      }
    }

    .jiancha-header-title-div:last-child {
      margin-right: 20px;
    }

    .jiancha-header-title-div-show {
      color: #00A0E9 !important;
    }
  }
}

.jiancha-content {
  background: #F9F9F9;
  padding: 10px 0 0 0;
  overflow: scroll;
  height: 100%;

  .jiancha-content-div {
     90%;
    margin: 10px auto;
    // padding: 10px 0;
    background: #fff;

    .jiancha-content-div-top {
      display: flex;
      padding: 10px;
      height: 20px;
       auto;

      .jiancha-content-div-top-left {
        height: 80%;
         3px;
        margin-top: 2px;
        border-radius: 10px;
        background: #00A0E9;
      }

      .jiancha-content-div-top-right {
        font-weight: bold;
        line-height: 20px;
        color: #000000;
        margin-left: 5px;
      }
    }

    .jiancha-content-div-content {
      display: flex;
      flex-wrap: wrap;

      .jiancha-content-div-content-div {
         30%;
        background: #F9F9F9;
        word-wrap: break-word;
        word-break: normal;
        text-align: center;
        margin: 10px 5px;

        .jiancha-content-div-content-div-span {
          margin: 5px 5px;
          font-size: 14px;
          font-weight: 400;
        }
      }

      .jiancha-content-div-content-div:nth-child(n+4) {
        margin: 0 5px 10px 5px;
      }
    }
  }
}

.jiancha-content:last-child {
  padding-bottom: 30px;
}

.is_fixed {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
}

参考网站实现功能：https://www.yisu.com/zixun/603790.html

参考网站实现功能：https://blog.csdn.net/qq493820798/article/details/106234801

动画效果：

<template>

  <div>

    <div class="jiancha-header" id="boxFixed" :class="{'is_fixed' : isFixed}">

      <el-row class="jiancha-header-top">

        <i class="el-icon-arrow-left jiancha-header-i" @click="$router.go(-1);"></i>

        <span class="jiancha-header-span">检查阅读</span>

        <el-input v-model="input" prefix-icon="el-icon-search" placeholder="搜索检查项目"></el-input>

      </el-row>

      <div class="jiancha-header-title">

        <div class="jiancha-header-title">

          <div

            v-for="(item,key) in titleArr"

            :key="key"

            class="jiancha-header-title-div"

            @click="goAnchor(key)"

          >

            <a

              href="javascript:void(0)"

              :class="key === titleId ? 'jiancha-header-title-div-show' : ''"

            >{{item.name}}</a>

            <div

              style="20px;height:2px;background: #00A0E9;margin:0 auto;border-radius: 20px;"

              v-show="key === titleId"

            ></div>

          </div>

        </div>

      </div>

    </div>

    <div class="jiancha-content">

      <div class="jiancha-content-div" v-for="(item,key) in contentArr" :key="key" :id="'anchor'+key">

        <div class="jiancha-content-div-top">

          <div class="jiancha-content-div-top-left"></div>

          <div class="jiancha-content-div-top-right">{{item.name}}</div>

        </div>

        <div class="jiancha-content-div-content">

          <div

            class="jiancha-content-div-content-div"

            v-for="(item2,key2) in item.content"

            :key="key2"

            :id="item2.id"

          >

            <div class="jiancha-content-div-content-div-span">{{item2.title}}</div>

          </div>

        </div>

      </div>

    </div>

  </div>

</template>

<script>

import "../../assets/css/jiancha/jiancha.css";

import { getJianChaMsg, getJianChaDetailMsg } from "@/api/jiancha";

export default {

  data() {

    return {

      input: "",

      titleArr: [],

      contentArr: [],

      titleId: 0,

      isFixed: false,

      offsetTopA: 0

    };

  },

  created() {

    this.initMsg();

  },

  mounted() {

    window.addEventListener("scroll", this.initHeight);

    this.$nextTick(() => {

      this.offsetTopA = document.querySelector("#boxFixed").offsetTop;

    });

  },

  methods: {

    goAnchor(index) {

      this.titleId = index;

      var anchor = this.$el.querySelector("#anchor" + index);

      document.body.scrollTop = anchor.offsetTop - 130;

      document.documentElement.scrollTop = anchor.offsetTop - 130;

    },

    checkTitle(val) {

      console.log(val);

      this.titleId = val;

    },

    initHeight(e) {

      var scrollTop =

        window.pageYOffset ||

        document.documentElement.scrollTop ||

        document.body.scrollTop;

      this.isFixed = scrollTop > this.offsetTopA ? true : false;

      let scrollItems = document.querySelectorAll('.jiancha-content-div')

      for (let i = scrollItems.length - 1; i >= 0; i--) {

        // 判断滚动条滚动距离是否大于当前滚动项可滚动距离

        let judge = scrollTop >= scrollItems[i].offsetTop - scrollItems[0].offsetTop - 130;

        if (judge) {

          this.titleId = i

          break

        }

      }

//       var anchorOffset0 = this.$el.querySelector('#anchor0').offsetTop-100

// 　　  var anchorOffset1 = this.$el.querySelector('#anchor1').offsetTop-100

//      var anchorOffset2 = this.$el.querySelector('#anchor2').offsetTop-100

// 　　  if(scrollTop>anchorOffset0&&scrollTop<anchorOffset1){

// 　　　　this.seeThis = 0

// 　　  }

// 　　  if(scrollTop>anchorOffset1&&scrollTop<anchorOffset2){

// 　　　　this.seeThis = 1

// 　　  }

// 　　  if(scrollTop>anchorOffset2){

// 　　　　this.seeThis = 2

// 　　  }

    },

    initMsg() {

      getJianChaMsg()

        .then(res => {

          console.log(res);

          this.titleArr = res.data.data.info.map(item => {

            return {

              id: item.id,

              name: item.name

            };

          });

          this.contentArr = res.data.data.info;

          console.log(this.contentArr);

        })

        .catch(err => {

          console.log(err);

        });

    }

  },

  destroyed() {

    window.removeEventListener("scroll", this.handleScroll);

  }

};

</script>

<style>

</style>