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<!DOCTYPE html> <html> <body> <h1>A Hidden Field (look in source code)</h1> <form action="/action_page.php"> <label for="fname">First name:</label> <input type="text" id="fname" name="fname"><br><br> <input type="hidden" id="custId" name="custId" value="3487"> <input type="submit" value="Submit"> </form> <p><strong>Note:</strong> The hidden field is not shown to the user, but the data is sent when the form is submitted.</p> </body> </html>
