.vue文件中监听input输入事件-oninput

<input type="search" v-model="keyword" placeholder="搜索你想要的内容" autocomplete="off" v-on:input="listenKeyword">

<script>
export default{
    data(){
        return {
            keyword:''
        }
    },
    methods:{
        listenKeyword(){
           if(this.keyword.length==0){
                //do something
           }
       }
    }
}
</script>