Function that takes an input string and returns true if the string matches a number between 0 and 9.

check number only

/**
 * Checks if the value is a number 0-9 or .
 * @method isNumberOnly
 * @param  {String}     value String to test
 * @return {Boolean}    Result of regex test
 */
export function isNumberOnly(value) {
  const regexp = /\d|\./g
  return regexp.test(value)
}