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Vue implements keyboard effect

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Release: 2018-04-13 14:42:08
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This time I will bring you vue to implement the keyboard effect. What are the precautions for vue to implement the keyboard effect? ​​The following is a practical case, let's take a look.

We often see custom keyboards used in various app applications. In this example, vue2 is used to implement a simple keyboard, which can be used on mobile and PC terminals

Keyboard.vue

<template>
 <p class="keyboard" v-show="showKeyboard" v-clickoutside="closeModal">
 <p v-for="keys in keyList">
  <template v-for="key in keys">
  <i v-if="key === &#39;top&#39;" @click.stop="clickKey" @touchend.stop="clickKey" class="iconfont icon-zhiding tab-top"></i>
  <i v-else-if="key === &#39;123&#39;" @click.stop="clickKey" @touchend.stop="clickKey" class="tab-num">123</i>
  <i v-else-if="key === &#39;del&#39;" @click.stop="clickKey" @touchend.stop="clickKey" class="iconfont icon-delete key-delete"></i>
  <i v-else-if="key === &#39;blank&#39;" @click.stop="clickKey" @touchend.stop="clickKey" class="iconfont icon-konggejian-jianpanyong tab-blank"></i>
  <i v-else-if="key === &#39;symbol&#39;" @click.stop="clickKey" @touchend.stop="clickKey" class="tab-symbol">符</i>
  <i v-else-if="key === &#39;point&#39;" @click.stop="clickKey" @touchend.stop="clickKey" class="tab-point">·</i>
  <i v-else-if="key === &#39;enter&#39;" @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>
 </p>
</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>
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KeyInput.vue

<template>
 <p>
 <input type="text" ref="keyboard" v-model="inputValue" @focus="onFocus">
 <Keyboard :option="option" @keyVal="getInputValue" @close="option.show = false"></Keyboard>
 </p>
</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>
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Use demo

<template>
 <p>
 <key-input class="demo-class"></key-input>
 </p>
</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>
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I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

Detailed explanation of the use of vue-cli

Detailed explanation of Vue template file packaging and configuration steps

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