输入高血压会显示高亮，但如果输入我得了高血压就不会显示这关键字了，，，希望有人指导一下修改吧

html

  <div  class="box"> 
    <div class="chat" ref="chatContent">
         <!-- 左边客服回复的区域 -->
         <div class="left">
             <!-- 头像 -->
             <div>
                 <img src="../assets/medicine.jpg" alt="">
             </div>
             <!-- 聊天文本 -->
             <div class="message">
                 <p @click="z">你好</p>
             </div>
         </div>
         <!-- 右边用户发信息区域 -->
         <div class="right">
             <!-- 头像 -->
             
             <!-- 聊天文本 -->
             <div class="message-right">
                 <p>你好</p>
             </div>
             <div>
                 <img src="../assets/new.jpg" alt="">
             </div>
         </div>
        
         
    </div>
    <!-- 模糊查询 -->
    
    <!-- 输入框位置 -->
    <div class="txt">
         <div class="suggest" v-show="show">
           <li v-for="(k,index) in filterFruitList" :key="index" @click="getTxt(k,index)">
            <span v-html="k"></span>
           </li>
        </div>
        <input type="text" v-model="txt" @input="change">
        <van-button type="info" @click="send">发送</van-button>
       
    </div>
  </div>

 css，使用了less预处理

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    

}   
    .box{
        background:#efefef;
        width: 100%;
        height: calc(100% );
        box-sizing: border-box;
        position: absolute;
        overflow: auto;
        padding: 5px 0;
    }

    .chat{
        margin-bottom: 75px;
        height: 90vh;
        overflow-y: auto;
    }

    li{
        list-style: none;
    }
    img{
        width: 45px;
        height: 45px;
        border-radius: 50%;
    }
    .left{
        width: 100%;
        padding: 0 10px;
        text-align: left;
        display: flex;
        align-items: center;
        margin-top: 5px;
    }

   .right{
        width: 100%;
        padding: 0 10px;
        text-align: right;
        display: flex;
        align-items: center;
        justify-content: flex-end;
        margin-top: 5px;
    }

    .message{
       max-width: 70%;
       
        margin-left: 10px;
        p{
             background: #fff;
              padding: 10px;
              border-radius: 4px;
              
        }
    }

    .message-right{
        margin-right: 10px;
        p{
            background: #95ec69;
              padding: 10px;
              border-radius: 4px;
        }
    }

    .txt{
        width: 90%;
        position: fixed;
        bottom: 30px;
        left: 50%;
        transform: translateX(-50%);

        button{
            margin-left: 10px;
            height: 35px;
            float: right;  
            border: 0;
            background: #1989fa;
        }
        input{
            width: 75%;
            height: 35px;
            border: 0;
            border-radius: 5px;
            padding: 0 10px;
        }
   
    }
    
    .suggest{
        width: 60%;
        padding: 10px 5px;
        background: #fff;
        border-radius: 10px;
        margin-left: 10px;
        margin-bottom: 10px;
        li{
            margin: 5px 0;
        }
    }

    .hint{
        font-size: 12px;
        color: #1989fa;
        margin-top: 4px;
    }

js

  data(){
        return{
            json:require('../json/index.json'),
            value: '',
            txt:'',
            show:false,
            num:-1
        }
    },
    mounted(){
        
    },
    methods:{
        z(){
            console.log(1111111111111);
        },
        send(){
            if(this.txt==''){
                this.$toast.fail('输入内容')
                return
            }
            let chat=document.querySelector('.chat')
            let right=document.createElement('div')
            right.classList.add('right')
            right.innerHTML=`   
             <div class="message-right">
                 <p>${this.txt}</p>
             </div>
             <div>
                 <img src="${require('../assets/new.jpg')}" alt="">
             </div>`
             chat.appendChild(right)
             

            this.reply()
        },

        reply(){
             let str=''
             this.json.forEach((item) => {
            
            if(this.num>=0){
            
                str=item.answer[this.num].name
             
            }else{
             if(item.name.indexOf(this.txt)>-1){
                str=item.headline[0].name
               }
            }
          
           })
            let chat=document.querySelector('.chat')
            let left=document.createElement('div')
            left.classList.add('left')
            
            left.innerHTML=`   
              <div>
                 <img src="${require('../assets/medicine.jpg')}" alt="">
             </div>
             <div class="message">
                 <p>${str}
                 <span style="display:${this.num>=0?'none':'block'}" class="hint">点击需要资讯的问题</span>  
                 </p>
                 
             </div>
           `
             chat.appendChild(left)
             this.num=-1
             this.txt=''

             this.$nextTick().then(() => {
             let i=document.querySelectorAll('i')
             console.log(this.txt);
             i.forEach((key,index)=>{
                
                key.addEventListener('click',this.getTxtFunction)
                this.$refs.chatContent.scrollTop = this.$refs.chatContent.scrollHeight;
             })
         
        })
        },

        getTxtFunction(e){
            this.txt=e.target.innerHTML
            let z=this.txt.slice(0,1)
            this.num=z-1
        },
        onSearch(val) {
            Toast(val);
        },

        change(){
            setTimeout(()=>{
                if(this.txt==''){
                this.show=false
            } 
               let arr=  this.json.filter((item) => {
                    if(item.name.indexOf(this.txt) !== -1){
                        this.show=true
                    }
               return  item.name.indexOf(this.txt) !== -1;
           })
        
            if(this.txt==''){
                this.show=false
            }
            },1000)
        },

        getTxt(k,index){
            console.log(k,index);
            var reg = /[\u4e00-\u9fa5]/g;
            var names = k.match(reg);
            let str = names.join("");
            this.txt=str
        }
    },
    watch:{

    },
    computed:{
        filterFruitList() {
             if (this.txt=='') {
                this.show=false
         }
         let result=[]
             this.json.forEach((item) => {
            if( item.name.indexOf(this.txt) !== -1){
                result.push(item)
            }
         })

         let dataList=[]
         result.forEach((k)=>{
            const reg=new RegExp(this.txt,'ig')
            let title=k.name.replace(reg,(val)=>`<span style='color:red'>${val}</span>`)
            dataList.push(title)
         })
        
         return dataList
        }
    }

还引入了一个json格式的文件当数据使用，是一个数组里面包对象，格式如下