uni-app下拉框 可輸入下拉框 搜索+選擇組合框功能

效果圖

插件示例地址文章來源地址http://www.zghlxwxcb.cn/news/detail-513380.html

https://ext.dcloud.net.cn/plugin?id=3756

<!-- 頁面添加該標(biāo)簽 -->
<template>
    <view>
		<combox-search label="選擇職位：" labelWidth="130px" emptyTips="無匹配選項" :isJSON="true" :keyName="keyName"
			placeholder="請選擇職位" :candidates="zhiweiList" @getValue="getValue"></combox-search>
	</view>		
</template>

<script>
<!-- 引入該vue文件 -->
	import combox_Searchfrom "@/pages/components/cuihai-combox/cuihai-combox.vue"
	export default {
		components: {
			combox_Search 
		},
		data() {
			return {
				keyName: 'keyName',
				form: {
					
					zhiweiId: '', //職位id
					
				},
				zhiweiList: [], //職位
				
			}
		},
		onLoad() {
			this.getzhiweiList();
		
		},
		methods: {
			getValue(e) {
				console.log(e)
				this.form.zhiweiId= e.zhiweiId
			},
			onchange(e) {
				const value = e.detail.value
			},
			goBack() {
				uni.navigateTo({
					url: '/pages/menu/menu'
				})
			},
			changeLog(e) {},
			//查詢職位
			getzhiweiList() {
				//查詢方法接口
			},
		}

	}
</script>

//下載后并在項目中添加該文件
<template>
	<view class="uni-combox">
		<view v-if="label" class="uni-combox__label" :style="labelStyle">
			<text>{{label}}</text>
		</view>
		<view class="uni-combox__input-box">
			<input class="uni-combox__input" style="margin-left: -14px;" type="text" :placeholder="placeholder" :disabled="isDisabled" v-model="inputVal"
			 @input="onInput" @focus="onFocus" @blur="onBlur" />
			 <!--自測真機(jī)測試可以使用清除按鈕 -->
			<icon type="clear" size="10" @tap="clearInputValue" v-if="!isDisabled" />
			<!-- <uni-icons class="uni-combox__input-arrow" type="arrowdown" size="14" @click="toggleSelector"></uni-icons> -->
			<view class="uni-combox__selector" v-if="showSelector">
				<scroll-view scroll-y="true" class="uni-combox__selector-scroll">
					<view class="uni-combox__selector-empty" v-if="filterCandidatesLength === 0">
						<text>{{emptyTips}}</text>
					</view>
					<view class="uni-combox__selector-item" v-for="(item,index) in filterCandidates" :key="index" @click="onSelectorClick(item)"
					 :style="isCheck(index)?'color:'+selectColor+';background-color:'+selectBgColor+';':'color:'+color+';'">
						<text>{{isJSON?item[keyName]:item}}</text>
					</view>
				</scroll-view>
			</view>
		</view>
	</view>
</template>

<script>
	/**
	 * Combox 組合輸入框
	 * @description 組合輸入框一般用于既可以輸入也可以選擇的場景
	 * @property {String} label 左側(cè)文字
	 * @property {String} labelWidth 左側(cè)內(nèi)容寬度
	 * @property {String} placeholder 輸入框占位符
	 * @property {Array} candidates 候選項列表
	 * @property {String} emptyTips 篩選結(jié)果為空時顯示的文字
	 * @property {String} value 單選時組合框的初始值
	 * @property {Array} initValue 多選時組合框的初始值(下標(biāo)集合)
	 * @property {String} keyName json數(shù)組顯示的字段值
	 * @property {Boolean} isJSON 是否是json數(shù)組，默認(rèn)不是
	 * @property {Boolean} isDisabled 是否是禁用輸入，默認(rèn)不禁用
	 * @property {Boolean} isCheckBox 是否是多選，默認(rèn)不是，多選時不能輸入查詢
	 * @property {String} color 默認(rèn)字體顏色，默認(rèn)#000000
	 * @property {String} selectColor 選中字體顏色，默認(rèn)#0081ff
	 * @property {String} selectBgColor 選中背景顏色，默認(rèn)#e8e8e8
	 */
	export default {
		name: 'comboxSearch',
		props: {
			label: {
				type: String,
				default: ''
			},
			labelWidth: {
				type: String,
				default: 'auto'
			},
			placeholder: {
				type: String,
				default: ''
			},
			candidates: {
				type: Array,
				default () {
					return []
				}
			},
			emptyTips: {
				type: String,
				default: '無匹配項'
			},
			value: {
				type: String,
				default: ''
			},
			initValue: {
				type: Array,
				default: null
			},
			keyName: {
				type: String,
				default: ''
			},
			isJSON: {
				type: Boolean,
				default: false
			},
			isDisabled: {
				type: Boolean,
				default: false
			},
			isCheckBox: {
				type: Boolean,
				default: false
			},
			color: {
				default: "#000000",
				type: String
			},
			selectColor: {
				default: "#0081ff",
				type: String
			},
			selectBgColor: {
				default: "#e8e8e8",
				type: String
			}
		},
		data() {
			return {
				showSelector: false,
				inputVal: '',
				arrays: [],
				gid: `sm-org-dropDown-${(new Date()).getTime()}${Math.random()}`
			}
		},
		computed: {
			labelStyle() {
				if (this.labelWidth === 'auto') {
					return {}
				}
				return {
					width: this.labelWidth
					//width: 130
				}
			},
			filterCandidates() {
				if (!this.isDisabled) {
					if (this.isJSON) {
						let index = 0;
						return this.candidates.filter((item) => {
							item.index = index;
							index++;
							return item[this.keyName].indexOf(this.inputVal) > -1
						})
					} else {
						return this.candidates.filter((item) => {
							return item.indexOf(this.inputVal) > -1
						})
					}
				} else {
					if (this.isJSON) {
						let index = 0;
						return this.candidates.filter((item) => {
							item.index = index;
							index++;
							return item[this.keyName] != undefined;
						})
					} else {
						return this.candidates
					}
				}
			},
			filterCandidatesLength() {
				return this.filterCandidates.length
			}
		},
		created() {
			if (this.initValue != null) {
				this.arrays = this.initValue;
				this.inputVal = this.getInpuevals();
			}
			//在created的時候，給子組件放置一個監(jiān)聽，這個時候只是監(jiān)聽器被建立，此時這段代碼不會生效
			//uni.$on接收一個sm-org-dropDown-show的廣播
			uni.$on('sm-org-dropDown-show', (targetId) => {
				//接收廣播，當(dāng)該組件處于下拉框被打開的狀態(tài)，并且跟下一個被點(diǎn)擊的下拉框的gid不同時，將該組件的下拉框關(guān)閉，產(chǎn)生一個互斥效果。
				if (this.showSelector && this.gid != targetId) {
					this.showSelector = false
				}
			})
		},
		//當(dāng)子組件銷毀的時候，將建立的監(jiān)聽銷毀，這里不會影響代碼效果，但是在多次反復(fù)引用組件時，會在根節(jié)點(diǎn)定義越來越多的監(jiān)聽，長此以往影響性能，所以在不用的時候及時銷毀，養(yǎng)成好習(xí)慣
		beforeDestroy() {
			uni.$off('sm-org-dropDown-show')
		},
		watch: {
			value: {
				handler(newVal) {
					this.inputVal = newVal
				},
				immediate: true
			}
		},
		methods: {
			toggleSelector() {
				this.showSelector = !this.showSelector
				if (this.showSelector) {
					uni.$emit('sm-org-dropDown-show', this.gid)
				}
			},
			onFocus() {
				this.showSelector = true;
				uni.$emit('sm-org-dropDown-show', this.gid)
			},
			onBlur() {
				/* setTimeout(() => {
					this.showSelector = false;
				}, 50) */
			},
			onSelectorClick(index) {
				var itemPlus = index
				var items = index.id
				index = index.index
				if (this.isCheckBox) {
					let flag = this.arrays.indexOf(index);
					if (flag != -1) {
						let x = (this.arrays || []).findIndex((item) => item === index)
						this.arrays.splice(x, 1);
					} else {
						this.arrays.push(index);
					}
					this.inputVal = this.getInpuevals();
					if (this.isJSON) {
						this.$emit('getValue', this.arrays);
					} else {
						this.$emit('getValue', this.trimSpace(this.inputVal.split(" ")));
					}
				} else {
					this.showSelector = false
					if (this.isJSON) {
						this.$emit('getValue', itemPlus);
						//循環(huán)根據(jù)頁面數(shù)據(jù)傳入的數(shù)據(jù)下標(biāo)獲取搜索時的名稱跟id  并展示
						for (var i = 0; i < this.filterCandidates.length; i++){
							if(this.filterCandidates[i].index == index) {
								this.inputVal = this.filterCandidates[i].name;
							}
							
						}
					} else {
						this.$emit('getValue', this.filterCandidates[index]);
						this.inputVal = this.filterCandidates[index]
					}
				}
			},
			trimSpace(array) {
				for (var i = 0; i < array.length; i++) {
					if (array[i] == "") {
						array.splice(i, 1);
						i = i - 1;
					}
				}
				return array;
			},
			onInput() {
				setTimeout(() => {
					this.$emit('input', this.inputVal)
				})
			},
			clearInputValue() {
				this.inputVal = "";
				this.showSelector = false;
			},
			getInpuevals() {
				if (this.arrays.length == 0) {
					this.inputVal = "";
				} else {
					this.arrays.sort(function(a, b) {
						return a - b
					})
					this.inputVal = "";
					if (this.isJSON) {
						this.arrays.forEach(v => {
							this.inputVal += this.candidates[v][this.keyName] + " ";
						});
					} else {
						this.arrays.forEach(v => {
							this.inputVal += this.candidates[v] + " ";
						});
					}
				}
				return this.inputVal;
			},
			isCheck(index) {
				
				return this.arrays.indexOf(index) != -1;
			}
		}
	}
</script>

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