React input金额千分位格式化

import React from 'react';
import * as validateUtil from '../../utils/vaildator'
import * as datepipe from '../../utils/format/index';
const dateFormat = new datepipe.DateMonjiPipe();
const vaildate = new validateUtil.validateUtil();
export default React.memo((props: any) => {
  const [loginInfo, setLoginInfo] = React.useState('');
  const [msg, setmsg] = React.useState('');
  const onchange = (e:any) => {
    setLoginInfo(e.target.value)
  }
  const onBlur = (e: any) => {
    setLoginInfo(e.target.value.replace(/\B(?=(\d{3})+$)/g, ','))
    if (!vaildate.isNotBlank(loginInfo)) {
      return setmsg('必填值')
    }
  }
  const onfocus = (e:any) => {
    setLoginInfo(e.target.value.replace(/,/g, ''))
    return setmsg('')
  }
  return (
    <React.Fragment>
      <input type="text" onFocus={onfocus} onBlur={onBlur} value={loginInfo} name="username" onChange={(e) => { onchange(e) }} />
      <p>
        {msg}
      </p>
    </React.Fragment>
  )
})