template

<template>
  <div>
    <div class="header">
      <div class="search-total">
        <div class="search_model_zt">
          <div class="search">
            <div class="search_icon"><img :src="require('./img/search.png')"/></div>
            <
 
div class="search_input"><input v-model="searchitem" @keyup.enter="submit" placeholder="搜尋條文"/></div>
          </div>
        </div>
      </div>
    </div>
    <div class="law-content">
      <div id="content" v-if="datelist" v-html="changeColor(datelist.lawContent)"
 
></div>
    </div>
  </div>
</template>

JS

<script>
export default {
  data() {
    return {
      datelist: null,
      searchitem: '',
      searchnum: null,
      searchhead: 0,
    };
  },
  created() {
    this.datelist = {
      lawContent: '<div>測試<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><br/><span>是時時刻刻時刻勝利了</span><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' + '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span>' +
          '<div>測試<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/><br/><span>是時時刻刻時刻勝利了</span><span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span><br/>' +
          '<span>是時時刻刻時刻勝利了</span><br/><span>是時時刻刻時刻勝利了</span></div>',
      lawTypeName: 
 
'測試',
    }
    console.log(this.datelist.lawTypeName)
  },
  methods: {
    changeColor(item) {
      let searchitem = this.searchitem;
      console.log(this.datelist.lawTypeName);
      if (searchitem !== '') {
        return item.replace(new RegExp(searchitem, 'g'), '<a style="color:red" id="seach" >' + searchitem + '</a>');
      } else {
        return item;
      }
    },
    submit() {
      // 獲取所有a標籤的數量，這個頁面所有的a標籤都是由查詢替換獲得的，所以a標籤的數量可以當場查詢到關鍵詞的數量
      let num = document.getElementsByTagName("a").length;
      // 如果查詢關鍵詞存在，跳到第一個關鍵詞的位置，標頭增1，走滿一圈歸0
      if (num != 0) {
        document.getElementsByTagName("a")[this.searchhead].scrollIntoView({block: "start", behavior: "smooth"});
        if (this.searchhead < (num - 1)) {
          this.searchhead += 1;
        } else if (this.searchhead == (num - 1)) {
          this.searchhead = 0;
        }
      } else {
        //
      }
    },
  }
};
</script>

CSS

<style scoped>
#content {
  white-space: pre-line;
}

.header {
  width: 100%;
  top: 0px;
  background: white;
  padding: 8px 8px;
  border-bottom: 2px solid #f5f5f5;
}

.search-total {
  width: 100%;
  height: auto;
}

.search_model_zt {
  height: 35px;
  background: #fff;
}

.search {
  width: 100%;
  /* margin: auto; */
  border-radius: 30px;
  background-color: #f3f3f3;
  height: 32px;
  position: relative;
}

.search_icon {
  position: absolute;
  left: 5%;
  top: 7px;
  width: 16px;
  height: 16px;
}

.search_icon img {
  width: 100%;
  height: 100%;
}

.search_input {
  margin-left: 14%;
}

.search_input input {
  background: none;
  border: none;
  height: 34px;
  width: 100%;
}

input {
  outline: none;
  border: 0;
  background: none;
  font-size: 0.9rem;
}

.law-content {
  width: 100%;
  height: calc(100% - 95px);
  padding: 27px 18px 40px 16px;
  position: fixed;
  overflow: auto;
}

.law-content div {
  color: rgba(85, 85, 85, 1);
  font-size: 14px;
}
</style>