Use vue to implement simple keyboard operations-JS Tutorial-php.cn

Use vue to implement simple keyboard operations

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Release： 2018-06-15 15:01:02

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This article mainly introduces the example of using vue to implement a simple keyboard (supports mobile and PC). Now I share it with you and give you a reference.

It is common to 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.

Achieve the effect:

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 &#39;../directives/clickoutside&#39;
export default {
 directives: { clickoutside },
 data() {
 return {
  keyList: [],
  status: 0,//0 小写 1 大写 2 数字 3 符号
  lowercase: [
  [&#39;q&#39;, &#39;w&#39;, &#39;e&#39;, &#39;r&#39;, &#39;t&#39;, &#39;y&#39;, &#39;u&#39;, &#39;i&#39;, &#39;o&#39;, &#39;p&#39;],
  [&#39;a&#39;, &#39;s&#39;, &#39;d&#39;, &#39;f&#39;, &#39;g&#39;, &#39;h&#39;, &#39;j&#39;, &#39;k&#39;, &#39;l&#39;],
  [&#39;top&#39;, &#39;z&#39;, &#39;x&#39;, &#39;c&#39;, &#39;v&#39;, &#39;b&#39;, &#39;n&#39;, &#39;m&#39;, &#39;del&#39;],
  [&#39;123&#39;, &#39;point&#39;, &#39;blank&#39;, &#39;symbol&#39;, &#39;enter&#39;]
  ],
  uppercase: [
  [&#39;Q&#39;, &#39;W&#39;, &#39;E&#39;, &#39;R&#39;, &#39;T&#39;, &#39;Y&#39;, &#39;U&#39;, &#39;I&#39;, &#39;O&#39;, &#39;P&#39;],
  [&#39;A&#39;, &#39;S&#39;, &#39;D&#39;, &#39;F&#39;, &#39;G&#39;, &#39;H&#39;, &#39;J&#39;, &#39;K&#39;, &#39;L&#39;],
  [&#39;top&#39;, &#39;Z&#39;, &#39;X&#39;, &#39;C&#39;, &#39;V&#39;, &#39;B&#39;, &#39;N&#39;, &#39;M&#39;, &#39;del&#39;],
  [&#39;123&#39;, &#39;point&#39;, &#39;blank&#39;, &#39;symbol&#39;, &#39;enter&#39;]
  ],
  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 = &#39;&#39; }) {
  if(value.indexOf(&#39;tab-num&#39;) > -1){
   this.status = 2
   //数字键盘数据
  }else if(value.indexOf(&#39;key-delete&#39;) > -1){
  this.emitValue(&#39;delete&#39;)
  }else if(value.indexOf(&#39;tab-blank&#39;) > -1){
  this.emitValue(&#39; &#39;)
  }else if(value.indexOf(&#39;tab-enter&#39;) > -1){
  this.emitValue(&#39;\n&#39;)
  }else if(value.indexOf(&#39;tab-point&#39;) > -1){
  this.emitValue(&#39;.&#39;)
  }else if(value.indexOf(&#39;tab-symbol&#39;) > -1){
  this.status = 3
  }else if(value.indexOf(&#39;tab-top&#39;) > -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 === &#39;click&#39; && this.equip) return
  let value = event.srcElement.innerText
  value && value !== &#39;符&#39; && value !== &#39;·&#39; && value !== &#39;123&#39;? this.emitValue(value) : this.tabHandle(event.srcElement.classList)
 },
 emitValue(key) {
  this.$emit(&#39;keyVal&#39;, key)
 },
 closeModal(e) {
  if (e.target !== this.option.sourceDom) {
  // this.showKeyboard = false
  this.$emit(&#39;close&#39;, 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 &#39;../components/Keyboard&#39;
export default {
 components: {
 Keyboard
 },
 data() {
 return {
  option: {
  show: false,
  sourceDom: &#39;&#39;
  },
  inputValue: &#39;&#39;
 }
 },
 props: {},
 created() {},
 methods: {
 getInputValue(val) {
  if(val === &#39;delete&#39;){
  this.inputValue = this.inputValue.slice(0,this.inputValue.length -1)
  }else{
  this.inputValue += val
  }
 },
 onFocus() {
  this.$set(this.option, &#39;show&#39;, true)
  this.$set(this.option, &#39;sourceDom&#39;, this.$refs[&#39;keyboard&#39;])
 },
 //获取光标位置
 getCursorPosition() {
  let doc = this.$refs[&#39;keyboard&#39;]
  if (doc.selectionStart) return doc.selectionStart
  return -1
 },
 //设置光标位置 暂未实现
 setCursorPosition(pos) {
  let doc = this.$refs[&#39;keyboard&#39;]
  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 &#39;../components/KeyInput&#39;
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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The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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