Example
Example
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<!DOCTYPE html>
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<html>
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<head>
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<title>Pattern Validation</title>
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</head>
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<body>
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<h2>Postal PIN Code Verification</h2>
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<form>
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<p>
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<label for="pincode">6-Digit PIN Code:</label><br>
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<input type="text" id="pincode" name="pin" pattern="[0-9]{6}" title="Enter exactly 6 digits" required>
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</p>
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<button type="submit">Verify Code</button>
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</form>
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</body>
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</html>