HTML 5 · Forms
Validate in the browser
Constrain input with built-in attributes. Always validate on the server too.
<input name="age" type="number" required min="18" max="120">
<input name="code" pattern="[A-Z]{3}" title="Three capital letters">
HTML 5 · Forms
Constrain input with built-in attributes. Always validate on the server too.
<input name="age" type="number" required min="18" max="120">
<input name="code" pattern="[A-Z]{3}" title="Three capital letters">
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