element-ui input只允许输入数字

html:

<el-form-item label="用户账号:" prop="loginId">
  <el-input type="loginId" v-model.number="ruleForm.loginId" maxlength="11" placeholder="请输入用户账号" autocomplete="off"></el-input>
</el-form-item>

data:

data(){
 return{
　　ruleForm:{
　　　　loginId:''
　　}
 }
}
rules: {
   loginId: [{ required: true, message: "账号不能为空", trigger: "change" },{ type: 'number', message: '账号必须为数字'}]
}