之前也写过这个小组件，最近遇到select下加搜索的功能，所以稍微完善一下。

效果图：

子组件 dropdown.vue

<template> <div class="vue-dropdown default-theme"> <div class="cur-name" @click="isShow =! isShow">{{itemlist.cur.name}}</div> <div class="list-and-search" :class="isShow?'on':''"> <div class="search-module clearfix" v-show="isNeedSearch"> <input class="search-text" @keyup='search($event)' :placeholder="placeholder" /> </div> <ul class="list-module"> <li v-for ="(item,index) in datalist" @click="selectToggle(item)" :key="index"> <span class="list-item-text">{{item.name}}</span> </li> </ul> <div class="tip-nodata" v-show="isNeedSearch && datalist.length == 0">{{nodatatext}}</div> </div> </div></template><script> export default { data(){ return { datalist:[], isShow:false } }, props:{ 'itemlist':Object,//父组件传来的数据 'placeholder':{ type:String, default: '搜索' //input placeholder的默认值 }, 'isNeedSearch':{ //是否需要搜索框 type:Boolean, default: false }, 'nodatatext':{ //是否需要显示搜索 type:String, default: '未找到结果' //没有搜索到时的文本提示 } }, created(){ this.datalist = this.itemlist.data; //点击组件以外的地方，收起 document.addEventListener('click', (e) => { if (!this.$el.contains(e.target)){ this.isShow = false; } }, false) }, methods:{ selectToggle(data){ this.itemlist.cur.name = data.name; this.isShow = false; this.$emit('item-click',data); }, search(e){ let searchvalue = e.currentTarget.value; this.datalist = this.itemlist.data.filter((item,index,arr)=>{ return item.name.indexOf(searchvalue) != -1; }); } } }</script><style lang="less" scoped> .list-and-search{ background: #fff; border: 1px solid #ccc; display: none; &.on{ display: block; } } .cur-name{ height: 32px; line-height: 32px; text-indent: 10px; position: relative; color: #777; &:after{ position: absolute; right: 9px; top: 13px; content: " "; width: 0; height: 0; border-right: 6px solid transparent; border-top: 6px solid #7b7b7b; border-left: 6px solid transparent; border-bottom: 6px solid transparent; } &.show{ &:after{ right: 9px; top: 6px; border-right: 6px solid transparent; border-bottom: 6px solid #7b7b7b; border-left: 6px solid transparent; border-top: 6px solid transparent; } } } .vue-dropdown.default-theme { width: 200px; z-index:10; border-radius:3px; border: 1px solid #ccc; cursor: pointer; -webkit-user-select:none; user-select:none; &._self-show { display: block!important; } .search-module { position: relative; border-bottom: 1px solid #ccc; .search-text { width: 100%; height: 30px; text-indent: 10px; // border-radius: 0.5em; box-shadow: none; outline: none; border: none; // &:focus { // border-color: #2198f2; // } } .search-icon { position: absolute; top: 24%; right: 0.5em; color: #aaa; } } input::-webkit-input-placeholder{ font-size: 14px; } .list-module { max-height: 200px; overflow-y: auto; li { &._self-hide { display: none; } margin-top: 0.4em; padding: 0.4em; &:hover { cursor:pointer; color: #fff; background: #00a0e9; } } } } .tip-nodata { font-size: 14px; padding: 10px 0; text-indent: 10px; }</style>

父组件调用

<dropdown :item-click="dropDownClick" :isNeedSearch="true" :itemlist="itemlist"></dropdown>import Dropdown from '@/components/dropdown.vue'export default { data() { return { itemlist: { cur: { val: "", name: "所有产品" }, data: [{ val: "", name: "所有产品" }, { val: 1, name: "梦幻西游" }, { val: 2, name: "梦幻无双" }, { val: 3, name: "大话西游" }] }, } }, components: { Dropdown, }, methods :{ dropDownClick(e) { console.log(e.name, e.val) } }}

默认是不带搜索框，如果需要可以传这个 :isNeedSearch="true" 。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。