一、需求问题：在开发当中，我们可能会遇到这样的需求，当在搜索输入框输入查询的关键字后，后面能够动态的进行查询，并且显示出来

二、需求分析：既然需要使用输入框查询，那么需要通过v-model进行双向数据绑定，而在输入关键字后，能够动态的显示查询出来的数据，需要使用watch监听。当在数据发生变化后，能够立马进行监听到，然后进行相应的监听回调，动态查询数据并显示。

三、需求实现：

<template>
    <div class="search_body">
        <div class="search_input">
            <div class="search_input_wrapper">
                <i class="iconfont icon-sousuo"></i>
                <input type="text" v-model="message">
            </div>					
        </div>
        <div class="search_result">
            <h3>电影/电视剧/综艺</h3>
            <ul>
                <li v-for="item in movieList" :key="item.id"> 
                    <div class="img"><img :src="item.img | setWH('128.180')"></div>
                    <div class="info">
                        <p><span>{{ item.nm }}</span><span>{{ item.sc }}</span></p>
                        <p>{{ item.enm }}</p>
                        <p>{{ item.cat }}</p>
                        <p>{{ item.rt }}</p>
                    </div>
                </li>
            </ul>
        </div>
	</div>
</template>
    
<script>
export default {
    name: 'Search',
    data() {
        return {
            message: '',
            movieList: []
        }
    },
    watch: {
        message(newVal) {
            // console.log(newVal);
            this.axios.get('/api/searchList?cityId=10&kw='+newVal).then((res) => {
                var msg = res.data.msg;
                var movies = res.data.data.movies;
                if( msg && movies ){
                    this.movieList = res.data.data.movies.list;
                }
            })
        }
    }
}
</script>

<style scoped>
#content .search_body{ flex:1; overflow:auto;}
.search_body .search_input{ padding: 8px 10px; background-color: #f5f5f5; border-bottom: 1px solid #e5e5e5;}
.search_body .search_input_wrapper{ padding: 0 10px; border: 1px solid #e6e6e6; border-radius: 5px; background-color: #fff; display: flex; line-height: 20px;}
.search_body .search_input_wrapper i{font-size: 16px; padding: 4px 0;}
.search_body .search_input_wrapper input{ border: none; font-size: 13px; color: #333; padding: 4px 0; outline: none; margin-left: 5px; width:100%;}
.search_body .search_result h3{ font-size: 15px; color: #999; padding: 9px 15px; border-bottom: 1px solid #e6e6e6;}
.search_body .search_result li{ border-bottom:1px #c9c9c9 dashed; padding: 10px 15px; box-sizing:border-box; display: flex;}
.search_body .search_result .img{ width: 60px; float:left; }
.search_body .search_result .img img{ width: 100%; }
.search_body .search_result .info{ float:left; margin-left: 15px; flex:1;}
.search_body .search_result .info p{ height: 22px; display: flex; line-height: 22px; font-size: 12px;}
.search_body .search_result .info p:nth-of-type(1) span:nth-of-type(1){ font-size: 18px; flex:1; }
.search_body .search_result .info p:nth-of-type(1) span:nth-of-type(2){ font-size: 16px; color:#fc7103;}
</style>