微信小程序 自定义复选框实现代码实例

功能：　

1、需要多选复选框，并且可以上拉滚动；

2、需要通过名称手写字母排序的，并且可以上拉滚动；

常规的小程序自带的原生picker无法满足我们的要求，因此一些特殊效果需要我们自定义来实现，废话不多说，我们直接看效果：

index.wxml布局

<view class="container">
 <view class='class bgFFF' bindtap='isDep'>
 <view class='class-text'>
 <text class='red'> </text>
 <text>开放部门</text>
 </view>
 <view class='class-choose'>
 <text class='color333 perItem' wx:if="{{checkValue.length>0}}">
 <block wx:for="{{checkValue}}" wx:key="index"> {{item}} </block>
 </text>
 <text wx:else>默认全部</text>
 <image src='/images/right-icon.png' mode="widthFix"></image>
 </view>
 </view>
 <view class='class bgFFF' bindtap='isPer'>
 <view class='class-text'>
 <text class='red'> </text>
 <text>开放成员</text>
 </view>
 <view class='class-choose'>
 <text class='color333 perItem' wx:if="{{depValue.length>0}}">
 <block wx:for="{{depValue}}" wx:key="index"> {{item}} </block>
 </text>
 <text wx:else>默认全部</text>
 <image src='/images/right-icon.png' mode="widthFix"></image>
 </view>
 </view>
</view>


<!-- 部门列表 -->
<view class='typeListBox' wx:if="{{isDep}}">
 <view class='wrap'>
 <view class='nav'>
 <text class='active'>部门</text>
 <!-- <text class='{{navId==2?"active":""}}' data-id='2' bindtap='getNav'>人员</text> -->
 </view>
 <view class='checkbox-con'>
 <scroll-view scroll-y style="height: 700rpx;" scroll-top="{{scrollTop}}">
 <checkbox-group bindchange="checkboxChange" class="checkbox-group">
 <view wx:for="{{checkboxArr}}" wx:key="item.name">
 <label class="{{item.checked?'checkbox checked':'checkbox'}}" bindtap='checkbox' data-index="{{index}}">
 <checkbox value="{{item.name}}" checked="{{item.checked}}"/>{{item.name}}
 </label>
 </view>
 </checkbox-group>
 </scroll-view>
 </view>
 <view class='btn1'>
 <button class='bgFFF' bindtap='cancel'>取消</button>
 <button class='' bindtap='confirm'>确定</button>
 </view>
 </view>
</view>

<!-- 成员列表 -->
<view class='typeListBox' wx:if="{{isPer}}">
 <view class='wrap'>
 <!-- 字母锚点 -->
 <view class='anchor'>
 <view bindtap="jumpTo" wx:for="{{words}}" wx:key="i" data-opt="{{item}}">{{item}}</view>
 </view>


 <view class='nav'>
 <text class='active'>人员</text>
 </view>
 <view class='checkbox-con'>
 <scroll-view scroll-y style="height: 700rpx;" scroll-with-animation='true' scroll-top="{{scrollTop}}" scroll-into-view="{{toView}}">
 <view class='typeList'>
 <checkbox-group class="radio-group" bindchange="checkBoxPer">
 <view wx:for="{{personnelArr}}" wx:key="index" wx:for-item="itemName" wx:for-index="itemNameInd">
 <view class='typeList-item-title' id="{{itemName.name}}">{{itemName.name}}</view>
 <label class='typeList-item' data-itemnameind='{{itemNameInd}}' bindtap="checkPer" wx:for="{{itemName.a}}" wx:key="a" wx:for-item="item" data-index="{{index}}">
 <checkbox value="{{item.name}}" checked="{{item.checked}}" color='#3eace2'/>
 <text>{{item.name}}</text>
 </label>
 </view>
 </checkbox-group>
 </view>
 </scroll-view>
 </view>
 <view class='btn1'>
 <button class='bgFFF' bindtap='cancel'>取消</button>
 <button class='' bindtap='confirmPer'>确定</button>
 </view>
 </view>
</view>

index.wxss样式

.container {
 display: flex;
 flex-direction: column;
 box-sizing: border-box;
 background-color: #f5f5f5;
 padding-top: 20rpx;
} 

.class{
 display: flex;
 flex-direction: row;
 padding: 20rpx 0;
 background-color: #fff;
 margin-bottom: 20rpx;
}
.class view.class-text{
 flex: 1;
 padding-left: 30rpx;
 font-size: 14px;
}
.red{
 margin-right: 10rpx;
 color: #ff0000;
}
.class-choose{
 max-width: 60%;
 display: flex;
 flex-direction: row;
 text-align: right;
}
.class-choose-item{
 display: flex;
 flex-direction: column;
 padding-right: 40rpx;
}
.class-choose text{
 flex: 1;
 font-size: 14px;
 color: #999;
}
.class-choose text.color333{
 color: #333;
}
.class-choose image{
 width: 16px;
 margin: 6rpx 20rpx 0;
}


/* 部门列表样式 */
.typeListBox{
 z-index: 101;
 position: fixed;
 top: 0;
 left: 0;
 right: 0;
 bottom: 0;
 padding: 50rpx;
 background: rgba(0,0,0,0.3);
}
.typeList{
 /* margin-top: 200rpx; */
 padding: 0 30rpx;
 border-radius: 5px;
 font-size: 13px;
 background-color: #fff;
}
.typeList .radio-group{
 display: flex;
 flex-direction: column;
}
.typeList-item{
 display: flex;
 flex-direction: row;
 padding: 20rpx 0;
 border-bottom: 1rpx solid #f5f5f5;
}
.typeList-item text{
 margin-left: 10rpx;
 line-height: 48rpx;
}
.radio{
 padding: 0 20rpx 0 0;
}
.engineer{
 padding: 0 20rpx 0 0;
}
.engineer-text{
 line-height: 46rpx;
}
.engineer-item{
 padding: 10rpx 0;
}

.nav{
 display: flex;
 flex-direction: row;
 border-bottom: 1rpx solid #f5f5f5;
}
.nav text{
 padding: 20rpx;
 flex: 1;
 text-align: center;
 font-size: 16px;
}
.nav text.active{
 color: #3eace2;
 border-bottom: 1rpx solid #3eace2;
}.wrap{
 padding: 20rpx 30rpx;
 border-radius: 5px;
 font-size: 13px;
 background-color: #fff;
 position: relative;
}
 
.checkbox-con{
 margin: 50rpx auto;
 text-align: center;
 position: relative;
}
.checkbox-group view{
 float: left;
 width: 50%;
 display: flex;
 flex-direction: column;
 padding: 0 20rpx 40rpx;
 box-sizing: border-box;
}
.checkbox{
 flex: 1;
 height: 72rpx;
 line-height: 72rpx;
 font-size: 28rpx;
 color: #888888;
 border: 1rpx solid #CECECE;
 border-radius: 5rpx;
 /* display: inline-block; */
 /* margin: 0 10rpx 30rpx 0; */
 position: relative;
}
/* .checkbox-group{
 display: flex;
 flex-direction: row;
} */
.checked{
 color: #3eace2;
 background: rgba(49,165,253,0.08);
 border: 1rpx solid #3eace2;
}
.checkbox checkbox{
 display: none
}
.checked-img{
 width: 28rpx;
 height: 28rpx;
 position: absolute;
 top: 0;
 right: 0
}
.btn1{
 display: flex;
 flex-direction: row;
}
.btn1 button{
 flex: 1;
 background-color: #3eace2;
 color: #fff;
}
.btn1 button.bgFFF{
 margin-right: 20rpx;
 color: #666;
 background-color: #fff;
}
.perItem{
 box-sizing: border-box;
 text-overflow: ellipsis;
 white-space: nowrap;
 overflow: hidden;
}
.anchor{
 z-index: 101;
 position: absolute;
 top: 150rpx;
 right: 20rpx;
 font-size: 12px;
}
.anchor view{
 padding: 0 5rpx;
 text-align: center;
}
.typeList-item-title{
 padding: 10rpx 10rpx 5rpx;
 color: #666;
 background-color: #f5f5f5;
 text-align: left;
}

index.js

const app = getApp()
Page({
 data: {
 checkboxArr: [
 {
 checked: false,//是否选中
 id: "1",//部门能id
 name: "部门1",
 },
 {
 checked: false,//是否选中
 id: "2",//部门能id
 name: "部门2",
 },
 {
 checked: false,//是否选中
 id: "3",//部门能id
 name: "部门3",
 },
 {
 checked: false,//是否选中
 id: "4",//部门能id
 name: "部门4",
 },
 {
 checked: false,//是否选中
 id: "5",//部门能id
 name: "部门5",
 },
 {
 checked: false,//是否选中
 id: "6",//部门能id
 name: "部门6",
 },
 {
 checked: false,//是否选中
 id: "7",//部门能id
 name: "部门7",
 },
 {
 checked: false,//是否选中
 id: "8",//部门能id
 name: "部门8",
 },
 {
 checked: false,//是否选中
 id: "9",//部门能id
 name: "部门9",
 },
 {
 checked: false,//是否选中
 id: "10",//部门能id
 name: "部门10",
 },
 {
 checked: false,//是否选中
 id: "11",//部门能id
 name: "部门11",
 },
 {
 checked: false,//是否选中
 id: "12",//部门能id
 name: "部门12",
 },
 {
 checked: false,//是否选中
 id: "13",//部门能id
 name: "部门13",
 },
 {
 checked: false,//是否选中
 id: "14",//部门能id
 name: "部门14",
 },
 {
 checked: false,//是否选中
 id: "15",//部门能id
 name: "部门15",
 },
 ],//部门列表
 personnelArr: null,//人员列表
 checkValue: [],//部门
 depValue: [],//部门
 isDep: false,//部门显隐
 isPer: false,//成员显隐
 d_id: [],//部门id集合
 u_id: [],//人员集合
 words: null,//成员名称的手写字母
 },

 //控制部门的显隐
 isDep: function () {
 this.setData({
 isDep: true,
 })
 },
 
 //控制人员显隐
 isPer: function () {
 this.setData({
 isPer: true,
 })
 },

 //取消按钮
 cancel: function () {
 this.setData({
 isDep: false,
 isPer: false
 })
 },

 //人员
 checkPer: function (e) {
 var index = e.currentTarget.dataset.index;//获取当前点击的下标
 var ind = e.currentTarget.dataset.itemnameind;//获取当前点击的下标
 var personnelArr = this.data.personnelArr;//选项集合
 personnelArr[ind].a[index].checked = !personnelArr[ind].a[index].checked;//改变当前选中的checked值

 // var u_id = this.data.u_id;//获取data中的成员id集合
 // var id = personnelArr[ind].a[index].id;//获取选中的成员id
 // //判断，当前选中的这个值的checked是不是已经选中，如果是则将id放入选中成员id集合，反之则移除
 // if (personnelArr[ind].a[index].checked) {
 // u_id.push(id);
 // } else {
 // this.removeByValue(u_id, id);
 // }

 this.setData({
 personnelArr: personnelArr
 });
 },
 checkBoxPer: function (e) {
 var depValue = e.detail.value;
 this.setData({
 depValue: depValue
 });
 },
 confirmPer: function () {// 提交
 this.setData({
 isPer: false,
 })
 },

 //部门
 checkbox: function (e) {
 var index = e.currentTarget.dataset.index;//获取当前点击的下标
 var checkboxArr = this.data.checkboxArr;//选项集合
 checkboxArr[index].checked = !checkboxArr[index].checked;//改变当前选中的checked值

 //如果需要部门联动成员
 // var d_id = this.data.d_id;//获取data中的部门id集合
 // var id = checkboxArr[index].id;//获取选中的部门id
 // //判断，当前选中的这个值的checked是不是已经选中，如果是则将id放入选中部门id集合，反之则移除
 // if (checkboxArr[index].checked) {
 // d_id.push(id);
 // } else {
 // this.removeByValue(d_id, id);
 // }

 this.setData({
 checkboxArr: checkboxArr
 });
 },
 checkboxChange: function (e) {
 var checkValue = e.detail.value;
 this.setData({
 checkValue: checkValue
 });
 },
 confirm: function () {// 确定
 this.setData({
 isDep: false,
 // depValue: []如果是联动，选中部门后需要清除选中的成员
 })
 // this.getUser();//通过选中部门来获取不通的部门成员，将获取到的数据存入checkboxArr中
 },

 
 onLoad: function () {
 //模拟测试人员数据
 var arr = {
 data: [
 {
 checked: false,
 id: "83",
 name: "张三",
 word: "Z",
 }, {
 checked: false,
 id: "22",
 name: "张三丰",
 word: "Z",
 }, {
 checked: false,
 id: "23",
 name: "张无忌",
 word: "Z",
 }, {
 checked: false,
 id: "83",
 name: "李四",
 word: "L",
 }, {
 checked: false,
 id: "83",
 name: "王五",
 word: "W",
 }, {
 checked: false,
 id: "83",
 name: "测试",
 word: "C",
 },
 ],//成员数组
 words: ["C", "L", "W", "Z"],//成员字母集合
 };
 this.setData({
 words: arr.words,
 })
 this.integration(arr)
 },


 // 整合人员字母
 integration: function (list) {
 // console.log(list)
 var arr = [];
 for (var j = 0; j < list.words.length; j++) {
 var aa = {
 name: null,
 a: []
 };
 aa.name = list.words[j];
 for (var k = 0; k < list.data.length; k++) {
 if (list.words[j] == list.data[k].word) {
 aa.a.push(list.data[k]);
 }
 }
 arr.push(aa)
 }
 this.setData({
 personnelArr: arr,
 })
 // console.log(arr)
 },
})