Validating against a regular expression

HTML

<!-- Learn about this code on MDN: https://developer.mozilla.org/en-US/docs/Learn/HTML/Forms/Form_validation -->

<form>
  <label for="choose">Would you prefer a banana or a cherry?</label>
  <input id="choose" name="i_like" required pattern="banana|cherry">
  <button>Submit</button>
</form>

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Validating against a regular expression

HTML

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