Vue仿支付宝支付功能

<div class="goods-psd">
  <p class="apply-title">
   请输入支付密码
  </p>
  <p style="margin: 0.2rem">确认支付 <span>{{password}}</span> </p>
  <div class="psd-container">
   <input class="psd-input" type="password" readonly v-for="(value,index) in passwordGroup" :key="index" :value="value.value">
  </div>
 </div>
 <div class="input-pan">
  <div class="pan-num" v-for="(value,num) in number" :key="num" @click="inputPsd(value)">{{value}}</div>
 </div>
</div>

data () {
  return {
   popupVisible1: true,
   realInput: '',
   password: '111',
   passwordGroup: [],
   number: ['1','2','3','4','5','6','7','8','9','取消','0','删除'],
   pasgroup: [],
   currentInputIndex:-1
  }
 }

initPasswordGroup () {
 this.passwordGroup=[];
 for(var i=0;i<6;i++){
  this.passwordGroup.push({
    value:null
  })
 }
}

watch: {
  currentInputIndex (val) {
   if(val == 5){
    console.log(this.pasgroup)
   }else if(val <= -1){
    this.currentInputIndex = -1
   }
  }
 }

inputPsd (value) {
   switch (value) {
    case '取消':
     this.currentInputIndex = -1
     this.pasgroup = []
     this.initPasswordGroup ()
     break;
    case '删除':
     this.pasgroup.pop()
     console.log(this.pasgroup)
     // this.currentInputIndex 下标值,删除添加时改变
     this.passwordGroup[this.currentInputIndex].value = null
     this.currentInputIndex--
     console.log(this.passwordGroup)
     break;
    default:
     this.pasgroup.push(value)
     this.currentInputIndex++
     this.passwordGroup[this.currentInputIndex].value = value
   }
  },