Validate that the username contains letters and numbers

I want to validate that the user has letters and numbers
Example:

"pedro123" -> true
"peter" -> false

I have this:

function isUserNameValid(username) {
  const res = /(?!.*[\.\-\_]{2,})^[a-zA-Z0-9]{3,24}$/.exec(username);
  const valid = !!res;
  return valid;
}

>Solution :

You can use several regexps:

function isUserNameValid(username) {
  const hasLetter = /[a-zA-Z]/.test(username);
  const hasNumber = /[0-9]/.test(username);
  const isValid = hasLetter && hasNumber;
  return isValid;
}

console.log(isUserNameValid("pedro123"))
console.log(isUserNameValid("peter"))