本文介绍一体机常用的虚拟键盘实现，主打一个免费文章。喜欢就点个赞支持一下吧

simple-keyboard官网：simple-keyboard - simple-keyboard - Francisco HodgeSimple-keyboard is a virtual keyboard for Javascript. You can use it as an input for devices lacking a physical keyboard, such as kiosks, gamepad-cont...https://hodgef.com/simple-keyboard/

我的效果图

 首先感谢大佬好心人分享参照链接：vue+simple-keyboard 虚拟键盘有中文（拼音），获取焦点调出键盘半封组件_vue中使用simple-keyboardde手机键盘-CSDN博客文章浏览阅读410次，点赞9次，收藏11次。vue虚拟键盘 中文切换 自动调出_vue中使用simple-keyboardde手机键盘https://blog.csdn.net/weixin_43030842/article/details/135699327

 原创目标链接 Vue使用虚拟键盘及中英文切换功能_vue.js_脚本之家这篇文章主要给大家介绍了关于Vue使用虚拟键盘及中英文切换的相关资料,有时候在大型触屏设备(如双屏设备)中往往就没有键盘去操作,所以就需要去建立一个虚拟键盘去操作,需要的朋友可以参考下https://www.jb51.net/javascript/2907174rg.htm

1.安装所需依赖：

npm install simple-keyboard --save 
npm install simple-keyboard-layouts --save //中文字库
2.实现键盘组件：SimpleKeyboard.vue

<template><div :class="keyboardClass"></div>
</template>
<script>
import Keyboard from 'simple-keyboard'
import 'simple-keyboard/build/css/index.css'
//引入中文输入法
import layout from 'simple-keyboard-layouts/build/layouts/chinese' 
export default {name: 'SimpleKeyboard',props: {keyboardClass: {default: 'simple-keyboard',type: String,},maxLength: { default: '' },},data: () => ({keyboard: null,displayDefault: {'{bksp}': 'backspace','{lock}': '切换','{enter}': 'Enter','{tab}': 'Tab','{shift}': 'Shift','{change}': '中文','{space}': ' ','{clear}': '清空','{close}': '关闭'}}),mounted() {this.keyboard = new Keyboard(this.keyboardClass, {onChange: this.onChange,onKeyPress: this.onKeyPress,layoutCandidates: layout.layoutCandidates,layout: {// 默认布局default: ['` 1 2 3 4 5 6 7 8 9 0 - = {bksp}','{tab} q w e r t y u i o p [ ] \\',"{lock} a s d f g h j k l ; ' {enter}",'{shift} z x c v b n m , . / {clear}','{change} {space} {close}',],// shift布局shift: ['~ ! @ # $ % ^ & * ( ) _ + {bksp}','{tab} Q W E R T Y U I O P { } |','{lock} A S D F G H J K L : " {enter}','{shift} Z X C V B N M < > ? {clear}','{change} {space} {close}',],},// 按钮展示文字display: this.displayDefault,// 按钮样式buttonTheme: [{class: 'hg-red close',buttons: '{close}',},{class: 'change',buttons: '{change}',},],// 输入限制长度maxLength: this.maxLength,})},methods: {onChange(input) {this.$emit('onChange', input) // 输入值向外传递},// 重写清空按钮onChangeKey() {this.keyboard.setInput('')this.$emit('empty')},// @focus 触发时赋值 封装组件调用onChangeFocus(value) {this.keyboard.setInput(value)},// 点击键盘onKeyPress(button, $event) {// 点击关闭if (button === '{close}') {// 子组件调用父组件的关闭按钮方法this.$parent.closekeyboard()return false}else if (button === '{change}') {// 切换中英文输入法if (this.keyboard.options.layoutCandidates !== null) {this.$set(this.displayDefault, '{change}', '英文')// 切换至英文this.keyboard.setOptions({layoutCandidates: null,display: this.displayDefault,})} else {// 切换至中文this.$set(this.displayDefault, '{change}', '中文')this.keyboard.setOptions({layoutCandidates: layout.layoutCandidates,display: this.displayDefault,})}}else if (button === '{clear}') {this.onChangeKey()}else {let value =$event.target.offsetParent.parentElement.children[0].children[0].value// 输入框有默认值时，覆写if (value) {this.keyboard.setInput(value)}this.$emit('onKeyPress', button)}if (button === '{shift}' || button === '{lock}') this.handleShift()},// 切换shift/默认布局handleShift() {let currentLayout = this.keyboard.options.layoutNamelet shiftToggle = currentLayout === 'default' ? 'shift' : 'default'this.keyboard.setOptions({layoutName: shiftToggle,})},},
}
</script>
<style lang="less">
//这块样式可以根据自己的需求调整
@deep: ~'>>>';
.hg-candidate-box {position: fixed;width: 100%;font-size: 42px;z-index: 9999;.hg-candidate-box-list {.hg-candidate-box-list-item {padding: 0 20px;}}
}
.hg-rows {width: 100% !important;.hg-row {height: 60px;padding: 10px;.hg-button {height: 60px;font-size: 30px;}}
}
.hg-candidate-box {max-width: 5rem;left: 10px;
}
li.hg-candidate-box-list-item {width: 80px;height: 55px;
}
.hg-theme-default {width: 100%;height: 340px;left: 0;position: fixed;bottom: 0px;background-color: rgb(215, 214, 214); //间隙背景颜色.hg-button {&.hg-red {background: #db3e5d !important;color: white;&.close {max-width: 360px;}}&.change {max-width: 360px;}}
}
.hg-button {background-color: rgb(19, 19, 19) !important;color: antiquewhite;
}
.hg-button-shift {width: 180px;
}
.hg-button-clear {width: 180px;
}
.hg-button-enter {width: 150px;
}
.hg-button-lock {width: 150px;
}
</style>./SimpleKeyboard.vue

3.对键盘组件二次封装 

<template><div><div v-show="showKeyboard"><SimpleKeyboard ref="refSimpleKeyboard" class="Keyboard" @onChange="onChangeKeyboard" @empty="empty" /></div></div>
</template><script>
import SimpleKeyboard from './SimpleKeyboard'
export default {name: 'Keyboard',components: {SimpleKeyboard},data() {return {showKeyboard: false, // 键盘默认隐藏value: '',key: ''}},watch: {key(val) {this.key = valif (this.showKeyboard) {this.showKeyboard = falsesetTimeout(() => {this.showKeyboard = true}, 100)}},},methods: {// inpuit获取焦点显示虚拟键盘onInputFocus(res) {this.showKeyboard = true},// 给输入框赋值onChangeKeyboard(input) {this.$emit('input', { value: input, key: this.key });},// 隐藏键盘 父组件调用closeInputFocus() {this.showKeyboard = false},// 隐藏键盘 子组件调用closekeyboard() {this.showKeyboard = false},// 清空输入框empty() {this.$emit('input', { value: '', key: this.key });},// 给虚拟键盘赋当前输入框的值setKeyboardInput(input) {this.$refs.refSimpleKeyboard.onChangeFocus(input)}}
}
</script><style lang="less" scoped>
// 键盘样式
.Keyboard {position: absolute;
}
</style>

3.引用 

<template><div>
/*在需要显示虚拟键盘的地方增加获取焦点事件@focus=’onInputFocus(‘form.data’,form.data)‘参数说明：onInputFocus(‘form.data’,form.data)
参数说明：第一个参数为当前输入框的双向绑定数据名字（字符串），第二个参数为当前输入框的双向绑定数据*/<YsInput v-model="form.data" clearable placeholder="请输入关键字" @on-focus="onInputFocus('form.data', form.data)"@on-blur="outInputFocus" ref="searchInput" style="margin-right:16px;width: 410px;height: 48px;"></YsInput>
/*虚拟键盘半封装说明
需要在父组件中引入引入该组件 使用时需添加ref 以及@input="updateInputValue"回调函数。 input 为虚拟键盘回传值函数 为对象结构{value: '', key: ‘**’} value为键盘回传的值 key对应变量名字*/<KeysInput ref="keysInput" @input="updateInputValue"></KeysInput></div>
</template><script>
import KeysInput from './Keyboard.vue' //引入的虚拟键盘
export default {name: '**',components: { KeysInput },data() {return {form: {data: ''}}},methods: {// 当前input获取焦点时，显示键盘onInputFocus(event, value) {this.$refs.keysInput.showKeyboard = true// 传入绑定值（字符串）this.$refs.keysInput.key = event//传入当前值this.$refs.keysInput.setKeyboardInput(value)},// 当前input失去焦点时，隐藏键盘// outInputFocus() {//     if (this.$refs.keysInput) {//         this.$refs.keysInput.closeInputFocus();//     }// },// 回显在input框的值updateInputValue(value) {console.log(value)//根据key 回写input值let parameter = value.key.split(".") //把变量名字进行分割以免对象层级问题出现数据回传出现问题if (parameter.length == 1) {this.[value.key] = value.value} else {                               //参数长度为1 说明是普通变量 直接赋值let par0 = parameter[0]let par1 = parameter[1]this.[par0].[par1] = value.value    //赋值如果有更多层级则按需编写}},}
}
</script>