input输入框输入纯数字、数字及小数点

1.纯数字

<div>
  <el-form-item label="开户行:" prop="bankName" >
    <el-input v-model="formData.bankName" maxlength="100"  @keyup.native="proving"/>
  </el-form-item>
</div>

methods方法

proving() {
  this.formData.bankName = this.formData.bankName.replace(/[^\.\d]/g,'');
  this.formData.bankName = this.formData.bankName.replace('.','');
},

 

2.数字及两位小数点

<el-input 
v-model="form.personIncome" 
onkeyup="value=value.replace(/^\D*(\d*(?:\.\d{0,2})?).*$/g, '$1')" 
placeholder="单位：元">
</el-input>