Input type text only numbers allowed (React hooks)

gistfile1.txt

  const inputRegex = RegExp(`^\\d*(?:\\\\[.])?\\d*$`)

  const escapeRegExp = (string) => {
    return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&') // $& means the whole matched string
  }

  const handleChange = (e) => {
    const string = e.target.value
    if(inputRegex.test(escapeRegExp(string))) {
      setInputTest(string)
    }
  }