1.背景

给搜索出来的相应的字符串，加上高亮显示。

2.思路分析

2.1.建立函数wrapperKeyword，传入两个参数

  listQuery为搜索的数据(数据结构为对象{})，其中包括title，author等字段属性

    methods:{
        wrapperKeyword(k,v){
            function highlight(value){
                return `${value}`
            }
            if(!this.listQuery[k]){
                return v
            }else{
                return v.replace( new RegExp(this.listQuery[k],'ig'), v=>highlight(v) )
            }
        }
    }

wrapperKeyword函数返回的是带有html格式的字符串，所以在html中，使用v-html

2.2.引用wrapperKeyword函数

    mounted(){
        this.list.forEach( book => {
            book.titleWrapper = this.wrapperKeyword("title", book.title)
            book.authorWrapper = this.wrapperKeyword("author", book.author)
        })
    },

2.3.data数据

    data () {
        return {
            list:[
                {tite:'this is title1',author:'this is author1',content:'this is content1'},
                {tite:'this is title2',author:'this is author2',content:'this is content2'},
                {tite:'this is title3',author:'this is author3',content:'this is content3'},
                {tite:'this is title4',author:'this is author4',content:'this is content4'},
            ],
            listQuery: {title: "is"，author: "is"} 
        }; 
    },

2.4.html部分

    <div v-for="(item, index) in list" :key="index">
        <span v-html="item.titleWrapper">这里是题目span>
        <span v-html="item.authorWrapper">这里是题目span>
    div>