解决vue input或el-input type="number"输入数字,去除右侧箭头问题

<template>
    <Input v-model="value" placeholder="微信内部号码" type="number" number="true" class="aaaa"  :maxlength="20" clearable style="width:80%;ime-mode:Disabled" @on-keydown="changeaa(event)">
      <span slot="prepend">微信</span>
     </Input>
</template>
<script>
    export default {
        data () {
            return {
                value: ''
            }
        },
      methods:{
        changeaa(event){
            //禁止非数字字符输入
          if(event.keyCode<48||event.keyCode>57)event.returnValue=false;
        }
      }
    }
</script>
<style>
.aaaa input::-webkit-outer-spin-button,
.aaaa input::-webkit-inner-spin-button {
    -webkit-appearance: none;
}
.aaaa input[type="number"] {
    -moz-appearance: textfield;
}
</style>

<el-form-item label="测试数字编号" prop="departnum_id">
     <el-input v-model.number="deptForm.departnum_id" type="number" class="numrule":min="0" :max="99999" placeholder="11001" />
</el-form-item>

<style lang="css" scoped>
  /deep/.numrule input::-webkit-outer-spin-button,
  /deep/.numrule input::-webkit-inner-spin-button {
    -webkit-appearance: none!important;
  }
  /deep/.numrule input[type="number"]{
    -moz-appearance: textfield;
  }
  </style>

<style scoped>
.a >>> .b { /* ... */ }
</style>

<style lang="scss" scoped>
.a /deep/ .b {
  ......
  /deep/ .c {
    ....
  }
}
</style>

& /deep/ .isModify{
  & /deep/  .el-input__inner{
        border-color: #f6dfd4;
        background-color: #fff4ef;
        color: #ff6000;;
    }
}