微信小程序车牌号码模拟键盘输入练习，
未经允许，禁止转载，抄袭，如需借鉴参考等，请附上该文章连接。
相关资料参考：https://blog.csdn.net/littlerboss/article/details/79877918；
先来一波预览图。
预览图片一：
预览图二：
预览图三：
预览图四：
预览图五：
大概的效果就和原来图差不多。
思路解析：车牌号码由31位汉字，26位字母，10位数字组成的，开头第一位由省份简称的汉字，第二位字母根据省份下的城市或地区区分，最后的五位或者六位，是有字母和数字组成的，共有七位的车牌号码和八位的车牌号码，（注：其中的八位数的车牌号码为能源车的车牌号码。）
大概的逻辑思维，不包含代码获取值什么的或者验证其他的说明，详细看代码片段。
第一，原型的设计思路：先设计好模拟键盘的大概架构，样式。这里的分为三个不同的模拟键盘结构合在一起，分部为汉字，字母，数字，其样式统一；
第二：数据的交互思路：对需要的数据绑定或者修改填充等，如何获取，通过什么方式获取，再怎么反馈出来，需要搭建好数据的来回交互传递的大概模型；
第三，交互的体验思路：触发或者在输入框点击输入的时候，启动模拟键盘，先用汉字选择，其次是字母，最后由字母和数字混合，对三个架构先进行需求排序的理清；
第四，功能的操作思路：模拟键盘的功能性按钮，比如数字与字母之间的的切换，删除最后一位数据，清空全部数据和状态，关闭的结束等操作等体验。
第五：输入判断的思路：判断车牌号码输入的位数，第一位和第二位分部是什么，字母与数字的切换的判断。删除到第几位需要在什么样的状态输入下等。
大概就这这些样子了，能写怎么多字，感觉都超纲了，如果有错的地方，还望留言指正。
最后是源码：
wxml：
<view class='page wrapper'>
<view class="weui-cell__bd">
<view bindtap='LicensePlateNumber' class='LicensePlateNumber'>
<input value='{{LicensePlateNumber}}' disabled='true' placeholder='请选择'></input> </view>
</view> <view> <view class='licensePlateShow' hidden='{{licensePlateShowHidden}}'>
<!-- 遮罩层 -->
<view class='licensePlate_Bg' bindtap='licensePlate_close'>
</view> <!-- 省份 -->
<view class='licensePlate_provinces_Box' hidden='{{licensePlate_provinces_Box}}'>
<view class='licensePlate_provincesTist' wx:for='{{licensePlate_provinces}}' bindtap='licensePlate_provinces' data-licensePlateProvinces='{{item}}' wx:key='index'>{{item}}</view>
<view class='licensePlate_but' bindtap='licensePlate_close'>关闭</view>
</view> <!-- 字母 -->
<view class='licensePlate_letter_Box' hidden='{{licensePlate_letter_Box}}'>
<view class='licensePlate_letterTist' wx:for='{{licensePlate_letter}}' bindtap='licensePlate_letter' data-licensePlateProvinces='{{item}}' wx:key='index'>{{item}}</view>
<view class='licensePlate_letterTist_but'>
<view class='licensePlate_but' bindtap='licensePlate_switchDigital'>数字</view>
<view class='licensePlate_but' bindtap='licensePlate_delete'>删除</view>
<view class='licensePlate_but' bindtap='licensePlate_empty'>清空</view>
<view class='licensePlate_but' bindtap='licensePlate_close'>关闭</view>
</view>
</view> <!-- 数字 -->
<view class='licensePlate_digital_Box' hidden='{{licensePlate_digital_Box}}'>
<view class='licensePlate_digitalTist' wx:for='{{licensePlate_digital}}' bindtap='licensePlate_digital' data-licensePlateProvinces='{{item}}' wx:key='index'>{{item}}</view>
<view class='licensePlate_digital_but'>
<view class='licensePlate_but' bindtap='licensePlate_switchLetter'>字母</view>
<view class='licensePlate_but' bindtap='licensePlate_delete'>删除</view>
<view class='licensePlate_but' bindtap='licensePlate_empty'>清空</view>
<view class='licensePlate_but' bindtap='licensePlate_close'>关闭</view>
</view>
</view>
</view> </view>
</view>
wxss：
@import "weui.wxss";
page{
min-height:100%;
}
.wrapper{
width: 750rpx;
overflow:hidden;
}
.licensePlateShow{
width: 750rpx;
min-height: 100%;
position: absolute;
bottom: 0;
}
.licensePlate_Bg{
min-height: 100%;
width: 750rpx;
position: absolute;
z-index: 40;
overflow: hidden;
}
.licensePlate_provinces_Box{
width: 750rpx;
background-color: #d0d4da;
margin: 0 auto;
position: absolute;
bottom: 0;
display: flex;
display: -webkit-flex;
flex-wrap: wrap;
justify-content: flex-start;
/* border-top: 1px solid #abb2bd; */
z-index: 55;
}
.licensePlate_provincesTist{
flex:15%;
height: 100rpx;
line-height: 100rpx;
margin: 0 auto;
text-align: center;
background-color:#ffffff;
border-top: 1px solid #abb2bd;
border-left: 1px solid #abb2bd;
}
.licensePlate_provincesTist:nth-child(6n){
border-right: 1px solid #abb2bd;
}
.licensePlate_letter_Box{
width: 750rpx;
background-color: #d0d4da;
margin: 0 auto;
position: absolute;
bottom: 0;
display: flex;
display: -webkit-flex;
flex-wrap: wrap;
justify-content: flex-start;
/* border-top: 1px solid #abb2bd; */
z-index: 55;
}
.licensePlate_letterTist{
flex:15%;
height: 100rpx;
line-height: 100rpx;
margin: 0 auto;
text-align: center;
background-color:#ffffff;
border-top: 1px solid #abb2bd;
border-left: 1px solid #abb2bd;
}
.licensePlate_letterTist:nth-child(6n){
border-right: 1px solid #abb2bd;
}
.licensePlate_letterTist:nth-child(26){
border-right: 1px solid #abb2bd;
}
.licensePlate_letterTist_but{
width: 750rpx;
display: flex;
display: -webkit-flex;
flex-wrap: wrap;
justify-content: flex-start;
}
.licensePlate_digital_Box{
width: 750rpx;
background-color: #d0d4da;
margin: 0 auto;
position: absolute;
bottom: 0;
display: flex;
display: -webkit-flex;
flex-wrap: wrap;
justify-content: flex-start;
/* border-top: 1px solid #abb2bd; */
z-index: 55;
}
.licensePlate_digitalTist{
flex:25%;
height: 125rpx;
line-height: 125rpx;
margin: 0 auto;
text-align: center;
background-color:#ffffff;
border-top: 1px solid #abb2bd;
border-left: 1px solid #abb2bd;
}
.licensePlate_digital_but{
width: 750rpx;
display: flex;
display: -webkit-flex;
flex-wrap: wrap;
justify-content: flex-start;
}
.licensePlate_but{
flex: 1;
height: 100rpx;
line-height: 100rpx;
text-align: center;
color: #ffffff;
background-color:#ff6600;
border-top: 1px solid #abb2bd;
border-left: 1px solid #abb2bd;
}
.licensePlate_but:last-child{
border-right: 1px solid #abb2bd;
}
.LicensePlateNumber{
width: 750rpx;
height: 200rpx;
border-bottom: 1rpx solid #abb2bd
}js：
Page({
data: {
licensePlateShowHidden:true,
licensePlate_provinces_Box:true,
licensePlate_letter_Box: true,
licensePlate_digital_Box: true,
licensePlate_provinces: [
"京", "沪", "浙", "苏", "粤", "鲁",
"晋", "冀", "豫", "川", "渝", "辽",
"吉", "黑", "皖", "鄂", "津", "贵",
"云", "桂", "琼", "青", "新", "藏",
"蒙", "宁", "甘", "陕", "闽", "赣",
"湘"
],
licensePlate_letter: [
"A", "B", "C", "D", "E", "F",
"G", "H", "L", "J", "K", "L",
"M", "N", "O", "P", "Q", "R",
"S", "T", "U", "V", "W", "X",
"Y", "Z"
],
licensePlate_digital: [
"1", "2", "3",
"4", "5", "6",
"7", "8", "9",
"0"
],
LicensePlateNumber:'',
},
// 显示模拟键盘
LicensePlateNumber:function(){
var that = this;
var LicensePlateNumber = this.data.LicensePlateNumber;
var LicensePlateNumberLen = LicensePlateNumber.length;
console.log(LicensePlateNumber, LicensePlateNumberLen)
if (LicensePlateNumberLen == 0){
this.setData({
licensePlateShowHidden: false,
licensePlate_provinces_Box: false,
})
} else if (LicensePlateNumberLen == 1){
this.setData({
licensePlateShowHidden: false,
licensePlate_letter_Box: false,
})
}else{
this.setData({
licensePlateShowHidden: false,
licensePlate_digital_Box: false,
})
}
},
// 切换成字母
licensePlate_switchLetter:function(){
this.setData({
licensePlate_provinces_Box:true,
licensePlate_letter_Box:false,
licensePlate_digital_Box: true,
})
},
// 切换成数字
licensePlate_switchDigital: function () {
var LicensePlateNumber = this.data.LicensePlateNumber;
var LicensePlateNumberLen = LicensePlateNumber.length;
if (LicensePlateNumberLen == 1){
wx.showToast({
title: '车牌号码第二位必须是字母',
icon: 'none',
duration: 1500,
})
}else{
this.setData({
licensePlate_provinces_Box: true,
licensePlate_letter_Box: true,
licensePlate_digital_Box: false,
})
}
},
// 删除
licensePlate_delete: function (e) {
var LicensePlateNumber = this.data.LicensePlateNumber;
var LicensePlateNumberLen = LicensePlateNumber.length;
var LicensePlateNumberDelete = LicensePlateNumber.split('');
var NewLicensePlateNumber = LicensePlateNumberDelete.join('').slice(0,-1)
if (LicensePlateNumberDelete.slice(0,-1).length == 1){
this.setData({
licensePlate_provinces_Box: true,
licensePlate_letter_Box: false,
licensePlate_digital_Box: true,
})
} else if (LicensePlateNumberLen == 0 || LicensePlateNumber == '' || LicensePlateNumberDelete.slice(0, -1).length == 0){
this.setData({
licensePlate_provinces_Box: false,
licensePlate_letter_Box: true,
licensePlate_digital_Box: true,
})
}
this.setData({
LicensePlateNumber: NewLicensePlateNumber
})
},
// 清空
licensePlate_empty: function (e) {
this.setData({
LicensePlateNumber:'',
licensePlate_provinces_Box: false,
licensePlate_letter_Box: true,
licensePlate_digital_Box: true,
})
},
// 关闭模拟键盘
licensePlate_close:function(){
this.setData({
licensePlateShowHidden: true
})
},
// 点击获取省份
licensePlate_provinces: function (e) {
this.setData({
LicensePlateNumber: e.target.dataset.licenseplateprovinces,
licensePlate_letter_Box: false,
licensePlate_digital_Box: true,
})
console.log(e.target.dataset.licenseplateprovinces)
},
// 点击获取字母
licensePlate_letter: function (e) {
var LicensePlateNumber = this.data.LicensePlateNumber;
var LicensePlateNumberLen = LicensePlateNumber.length;
if (LicensePlateNumberLen != 8) {
this.setData({
LicensePlateNumber: LicensePlateNumber + e.target.dataset.licenseplateprovinces
})
console.log(e.target.dataset.licenseplateprovinces)
} else {
wx.showToast({
title: '车牌号码最多不能超过8位',
icon: 'none',
duration: 1500,
})
}
},
// 点击获取数字
licensePlate_digital: function (e) {
var LicensePlateNumber = this.data.LicensePlateNumber;
var LicensePlateNumberLen = LicensePlateNumber.length;
if (LicensePlateNumberLen != 8){
this.setData({
LicensePlateNumber: LicensePlateNumber + e.target.dataset.licenseplateprovinces
})
console.log(e.target.dataset.licenseplateprovinces)
}else{
wx.showToast({
title: '车牌号码最多不能超过8位',
icon:'none',
duration:1500,
})
}
},
})噢了。