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<!DOCTYPE html> <html> <body> <form action="https://www.w3schools.com/action_page.php"> Checkbox: <input type="checkbox" id="myCheck" name="test" required> <input type="submit"> </form> <p>Click the "Try it" button to find out if the checkbox must be checked before submitting the form.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myCheck").required; document.getElementById("demo").innerHTML = x; } </script> </body> <!-- /jsref/tryit.asp?filename=tryjsref_checkbox_required </html>
