使用vue实现简单键盘的示例(支持移动端和pc端)

常看到各种app应用中使用自定义的键盘，本例子中使用vue2实现个简单的键盘,支持在移动端和PC端使用

实现效果：

Keyboard.vue

<template>
 <div class="keyboard" v-show="showKeyboard" v-clickoutside="closeModal">
 <p v-for="keys in keyList">
  <template v-for="key in keys">
  <i v-if="key === 'top'" @click.stop="clickKey" @touchend.stop="clickKey" class="iconfont icon-zhiding tab-top"></i>
  <i v-else-if="key === '123'" @click.stop="clickKey" @touchend.stop="clickKey" class="tab-num">123</i>
  <i v-else-if="key === 'del'" @click.stop="clickKey" @touchend.stop="clickKey" class="iconfont icon-delete key-delete"></i>
  <i v-else-if="key === 'blank'" @click.stop="clickKey" @touchend.stop="clickKey" class="iconfont icon-konggejian-jianpanyong tab-blank"></i>
  <i v-else-if="key === 'symbol'" @click.stop="clickKey" @touchend.stop="clickKey" class="tab-symbol">符</i>
  <i v-else-if="key === 'point'" @click.stop="clickKey" @touchend.stop="clickKey" class="tab-point">·</i>
  <i v-else-if="key === 'enter'" @click.stop="clickKey" @touchend.stop="clickKey" class="iconfont icon-huiche tab-enter"></i>
  <i v-else @click.stop="clickKey" @touchend.stop="clickKey">{{key}}</i>
  </template>
 </p>
 </div>
</template>

<script>
import clickoutside from '../directives/clickoutside'

export default {
 directives: { clickoutside },
 data() {
 return {
  keyList: [],
  status: 0,//0 小写 1 大写 2 数字 3 符号
  lowercase: [
  ['q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p'],
  ['a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l'],
  ['top', 'z', 'x', 'c', 'v', 'b', 'n', 'm', 'del'],
  ['123', 'point', 'blank', 'symbol', 'enter']
  ],
  uppercase: [
  ['Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P'],
  ['A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L'],
  ['top', 'Z', 'X', 'C', 'V', 'B', 'N', 'M', 'del'],
  ['123', 'point', 'blank', 'symbol', 'enter']
  ],
  equip:!!navigator.userAgent.toLocaleLowerCase().match(/ipad|mobile/i)//是否是移动设备
 }
 },
 props: {
 option: {
  type: Object
 }
 },
 computed: {
 showKeyboard(){
  return this.option.show
 }
 },

 mounted() {
 this.keyList = this.lowercase
 },

 methods: {
 tabHandle({ value = '' }) {
  if(value.indexOf('tab-num') > -1){
   this.status = 2
   //数字键盘数据
  }else if(value.indexOf('key-delete') > -1){
  this.emitValue('delete')
  }else if(value.indexOf('tab-blank') > -1){
  this.emitValue(' ')
  }else if(value.indexOf('tab-enter') > -1){
  this.emitValue('\n')
  }else if(value.indexOf('tab-point') > -1){
  this.emitValue('.')
  }else if(value.indexOf('tab-symbol') > -1){
  this.status = 3
  }else if(value.indexOf('tab-top') > -1){
  if(this.status === 0){
   this.status = 1
   this.keyList = this.uppercase
  }else{
   this.status = 0
   this.keyList = this.lowercase
  }
  }else{

  }
 },

 clickKey(event) {
  if(event.type === 'click' && this.equip) return
  let value = event.srcElement.innerText
  value && value !== '符' && value !== '·' && value !== '123'? this.emitValue(value) : this.tabHandle(event.srcElement.classList)
 },

 emitValue(key) {
  this.$emit('keyVal', key)
 },

 closeModal(e) {
  if (e.target !== this.option.sourceDom) {
  // this.showKeyboard = false
  this.$emit('close', false)
  }
 }
 }
}
</script>
<style scoped lang="less">
.keyboard {
 width: 100%;
 margin: 0 auto;
 font-size: 18px;
 border-radius: 2px;
 padding-top: 0.5em;
 background-color: #e5e6e8;
 user-select: none;
 position: fixed;
 bottom: 0;
 left: 0;
 right: 0;
 z-index: 999;
 pointer-events: auto;
 p {
 width: 95%;
 margin: 0 auto;
 height: 45px;
 margin-bottom: 0.5em;
 display: flex;
 display: -webkit-box;
 flex-direction: row;
 flex-wrap: nowrap;
 justify-content: center;
 i {
  display: block;
  margin: 0 1%;
  height: 45px;
  line-height: 45px;
  font-style: normal;
  font-size: 24px;
  border-radius: 3px;
  width: 44px;
  background-color: #fff;
  text-align: center;
  flex-grow: 1;
  flex-shrink: 1;
  flex-basis: 0;
  -webkit-box-flex: 1;
  &:active {
  background-color: darken(#ccc, 10%);
  }
 }
 .tab-top {
  width: 50px;
  margin: 0 1%;
  background: #cccdd0;
  color: #fff;
  font-size: 24px;
 }
 .key-delete {
  width: 50px;
  margin: 0 1%;
  color: #827f7f;
  background: #d7d7d8;
 }
 .tab-num {
  font-size: 18px;
  background: #dedede;
  color: #5a5959;
 }
 .tab-point {
  width: 20px;
 }
 .tab-blank {
  width: 80px;
  font-size: 12px;
  padding: 0 15px;
  color: #5a5959;
  line-height: 60px;
 }
 .tab-symbol {
  width: 20px;
  font-size: 18px;
 }
 .tab-enter {
  font-size: 30px;
  line-height: 54px;
 }
 &:nth-child(2) {
  width: 88%;
 }
 }
}
</style>

KeyInput.vue

<template>
 <div>
 <input type="text" ref="keyboard" v-model="inputValue" @focus="onFocus">
 <Keyboard :option="option" @keyVal="getInputValue" @close="option.show = false"></Keyboard>
 </div>
</template>
<script>
import Keyboard from '../components/Keyboard'
export default {
 components: {
 Keyboard
 },
 data() {
 return {
  option: {
  show: false,
  sourceDom: ''
  },
  inputValue: ''
 }
 },
 props: {},
 created() {},
 methods: {
 getInputValue(val) {
  if(val === 'delete'){
  this.inputValue = this.inputValue.slice(0,this.inputValue.length -1)
  }else{
  this.inputValue += val
  }
 },
 onFocus() {
  this.$set(this.option, 'show', true)
  this.$set(this.option, 'sourceDom', this.$refs['keyboard'])
 },
 //获取光标位置
 getCursorPosition() {
  let doc = this.$refs['keyboard']
  if (doc.selectionStart) return doc.selectionStart
  return -1
 },
 //设置光标位置 暂未实现
 setCursorPosition(pos) {
  let doc = this.$refs['keyboard']
  console.log(doc.setSelectionRange)
  doc.focus()
  doc.setSelectionRange(1,3)
 }
 }
}
</script>
<style lang="less" scoped>

</style>

使用demo

<template>
 <div>
 <key-input class="demo-class"></key-input>
 </div>
</template>
<script>
import KeyInput from '../components/KeyInput'
export default {
 components: {
 KeyInput
 },
 data() {
 return {
 }
 },
 created() {},
 methods: {
 }
}
</script>
<style lang="less">
body{
 background: #efefef;
}
.demo-class{
 input{
 border:1px solid #ccc;
 outline: none;
 height: 30px;
 font-size: 16px;
 letter-spacing: 2px;
 padding: 0 5px;
 }
}
</style>

完整代码：https://github.com/dawnyu/vue-keyborad

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