前端Vue自定义带历史记录的搜索框组件searchBar 支持搜索输入框清空 搜索历史存储记录清除，下载完整代码请访问uni-app插件市场地址：https://ext.dcloud.net.cn/plugin?id=13343

效果图如下:

cc-hisSearchBar

使用方法

// 不同的业务功能历史记录设置不同存储key

const kStorageKey = "storageKey"

// 执行搜索事件

doSearch() {

if (this.keyword == '') {

uni.showToast({

title: '请输入要搜索的内容',

icon: 'none'

});

return;

}

//

if (this.keyword && this.keyword !== '') {

this.saveKeyword(this.keyword); //保存为历史

}

uni.showLoading({

title: '搜索中...'

});

this.setData({

keywordList: []

});

uni.hideLoading()

uni.showModal({

title: "温馨提示",

content: '搜索的内容 = ' + this.keyword

})

},

//点击历史记录搜索

doHisSearch(item) {

console.log(item)

uni.showModal({

title: '点击的历史搜索条目',

content: '点击的历史搜索条目 = ' + item

})

},

HTML代码实现部分

<template>

<view class="content">

<view class="search-box">

<view class="input-box">

<input type="text" adjust-position="true" v-model="keyword" :placeholder="defaultKeyword"

placeholder-class="search_text" @confirm="doSearch" data-key="false" confirm-type="search"

@input="onclear"></input>

<image src="/static/close.png" @tap="clears" v-if="shows == true"></image>

</view>

<view class="search-btn" @tap="doSearch" data-key="false" :style="'background:' + colors">搜索</view>

</view>

<view class="search-keyword">

<scroll-view class="keyword-box" scroll-y>

<view class="keyword-block" v-if="oldKeywordList.length>0">

<view class="keyword-list-header">

<view>历史搜索</view>

<view>

<image @tap="oldDelete" src="/static/delete.png"></image>

</view>

</view>

<view class="keyword">

<view v-for="(item, index) in oldKeywordList" :key="index" @tap="doHisSearch(item)">{{item}}

</view>

</view>

</view>

</scroll-view>

</view>

</view>

</template>

<script>

// 不同的业务功能历史记录设置不同存储key

const kStorageKey = "storageKey"

import Vue from 'vue'

Vue.mixin({

methods: {

setData: function(obj, callback) {

let that = this;

const handleData = (tepData, tepKey, afterKey) => {

tepKey = tepKey.split('.');

tepKey.forEach(item => {

if (tepData[item] === null || tepData[item] === undefined) {

let reg = /^[0-9]+$/;

tepData[item] = reg.test(afterKey) ? [] : {};

tepData = tepData[item];

} else {

tepData = tepData[item];

}

});

return tepData;

};

const isFn = function(value) {

return typeof value == 'function' || false;

};

Object.keys(obj).forEach(function(key) {

let val = obj[key];

key = key.replace(/\]/g, '').replace(/\[/g, '.');

let front, after;

let index_after = key.lastIndexOf('.');

if (index_after != -1) {

after = key.slice(index_after + 1);

front = handleData(that, key.slice(0, index_after), after);

} else {

after = key;

front = that;

}

if (front.$data && front.$data[after] === undefined) {

Object.defineProperty(front, after, {

get() {

return front.$data[after];

},

set(newValue) {

front.$data[after] = newValue;

that.$forceUpdate();

},

enumerable: true,

configurable: true

});

front[after] = val;

} else {

that.$set(front, after, val);

}

});

isFn(callback) && this.$nextTick(callback);

}

}

});

var app = getApp();

export default {

data() {

return {

defaultKeyword: "",

keyword: "",

oldKeywordList: [],

hotKeywordList: [],

keywordList: [],

forbid: '',

shows: false,

colors: ''

};

},

components: {},

props: {},

/**

* 生命周期函数--监听页面加载

*/

onLoad: function(options) {

this.setData({

colors: app.globalData.newColor

});

this.init();

},

methods: {

init() {

this.loadDefaultKeyword();

this.loadOldKeyword();

},

loadDefaultKeyword() {

//定义默认搜索关键字，可以自己实现ajax请求数据再赋值,用户未输入时，以水印方式显示在输入框，直接不输入内容搜索会搜索默认关键字

this.setData({

defaultKeyword: "请输入搜索的内容"

});

},

//加载历史搜索,自动读取本地Storage

loadOldKeyword() {

uni.getStorage({

key: kStorageKey,

success: res => {

var OldKeys = JSON.parse(res.data);

this.setData({

oldKeywordList: OldKeys

});

}

});

},

// 执行搜索事件

doSearch() {

if (this.keyword == '') {

uni.showToast({

title: '请输入要搜索的内容',

icon: 'none'

});

return;

}

//

if (this.keyword && this.keyword !== '') {

this.saveKeyword(this.keyword); //保存为历史

}

uni.showLoading({

title: '搜索中...'

});

this.setData({

keywordList: []

});

uni.hideLoading()

uni.showModal({

title: "温馨提示",

content: '搜索的内容 = ' + this.keyword

})

// uni.showToast({

// title: '暂无结果',

// icon: 'none'

// })

},

onclear(e) {

this.setData({

keyword: e.detail.value,

shows: e.detail.value !== '' ? true : false

});

},

//保存关键字到历史记录

saveKeyword(keyword) {

uni.getStorage({

key: kStorageKey,

success: res => {

var OldKeys = JSON.parse(res.data);

var findIndex = OldKeys.indexOf(keyword);

if (findIndex == -1) {

OldKeys.unshift(keyword);

} else {

OldKeys.splice(findIndex, 1);

OldKeys.unshift(keyword);

} //最多10个纪录

OldKeys.length > 10 && OldKeys.pop();

uni.setStorage({

key: kStorageKey,

data: JSON.stringify(OldKeys)

});

this.setData({

oldKeywordList: OldKeys //更新历史搜索

});

},

fail: e => {

var OldKeys = [keyword];

uni.setStorage({

key: kStorageKey,

data: JSON.stringify(OldKeys)

});

this.setData({

oldKeywordList: OldKeys //更新历史搜索

});

}

});

},

oldDelete() {

uni.showModal({

content: '确定清除历史搜索记录？',

success: res => {

if (res.confirm) {

console.log('用户点击确定');

this.setData({

oldKeywordList: []

});

uni.removeStorage({

key: kStorageKey

});

} else if (res.cancel) {

console.log('用户点击取消');

}

}

});

},

clears() {

this.setData({

keyword: '',

keywordList: [],

});

},

//点击历史记录搜索

doHisSearch(item) {

console.log(item)

uni.showModal({

title: '点击的历史搜索条目',

content: '点击的历史搜索条目 = ' + item

})

},

}

};

</script>

<style scoped lang="scss">

view {

display: block;

}

.search-box {

background-color: rgb(242, 242, 242);

padding: 15upx 2.5%;

display: flex;

justify-content: space-between;

position: sticky;

top: 0;

}

.search-box .mSearch-input-box {

width: 100%;

}

.search-box .input-box {

width: 85%;

flex-shrink: 1;

display: flex;

justify-content: center;

align-items: center;

}

.search-box .search-btn {

width: 15%;

margin: 0 0 0 2%;

display: flex;

justify-content: center;

align-items: center;

flex-shrink: 0;

font-size: 24upx;

color: #fff;

background: linear-gradient(to right, #4492EB, #3F92EE);

border-radius: 60upx;

}

.search-box .input-box>input {

width: 95%;

height: 60upx;

font-size: 24upx;

-webkit-appearance: none;

-moz-appearance: none;

appearance: none;

margin: 0;

background-color: #ffffff;

}

.placeholder-class {

color: #9e9e9e;

}

.search-keyword {

width: 100%;

background-color: rgb(242, 242, 242);

}

.keyword-list-box {

height: calc(100vh - 110upx);

padding-top: 10upx;

border-radius: 20upx 20upx 0 0;

background-color: #fff;

}

.keyword-entry-tap {

background-color: #eee;

}

.keyword-entry {

width: 94%;

height: 80upx;

margin: 0 3%;

font-size: 30upx;

color: #333;

display: flex;

justify-content: space-between;

align-items: center;

border-bottom: solid 1upx #e7e7e7;

}

.keyword-entry image {

width: 60upx;

height: 60upx;

}

.keyword-entry .keyword-text,

.keyword-entry .keyword-img {

height: 80upx;

display: flex;

align-items: center;

}

.keyword-entry .keyword-text {

width: 90%;

}

.keyword-entry .keyword-img {

width: 10%;

justify-content: center;

}

.keyword-box {

height: calc(100vh - 110upx);

border-radius: 20upx 20upx 0 0;

background-color: #fff;

}

.keyword-box .keyword-block {

padding: 10upx 0;

}

.keyword-box .keyword-block .keyword-list-header {

width: 94%;

padding: 10upx 3%;

font-size: 27upx;

color: #333;

display: flex;

justify-content: space-between;

}

.keyword-box .keyword-block .keyword-list-header image {

width: 40upx;

height: 40upx;

}

.keyword-box .keyword-block .keyword {

width: 94%;

padding: 3px 3%;

display: flex;

flex-flow: wrap;

justify-content: flex-start;

}

.keyword-box .keyword-block .hide-hot-tis {

display: flex;

justify-content: center;

font-size: 28upx;

color: #6b6b6b;

}

.keyword-box .keyword-block .keyword>view {

display: flex;

justify-content: center;

align-items: center;

border-radius: 38upx;

padding: 0 20upx;

margin: 10upx 20upx 10upx 0;

height: 60upx;

font-size: 24upx;

background-color: rgb(242, 242, 242);

color: #6b6b6b;

line-height: 60upx;

}

.search_text {

font-size: 24upx;

color: #B6B6C6;

}

.input-box {

position: relative;

height: 60upx;

font-size: 24upx;

border: 0;

border-radius: 60upx;

-webkit-appearance: none;

appearance: none;

padding: 0 3%;

margin: 0;

background-color: #ffffff;

}

.input-box image {

height: 40upx;

width: 40upx;

float: right;

position: absolute;

right: 2%;

top: 50%;

transform: translateY(-50%);

z-index: 100;

}

</style>