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<!DOCTYPE html> <html> <body> <p>A form with a search field that CANNOT contain the following characters: ' or "</p> <form action="/action_page.php"> Search: <input type="search" id="mySearch" name="search" pattern="[^'\x22]+" title="Invalid input"> <input type="submit"> </form> <p>Click the "Try it" button to display the value of the pattern attribute of the search field.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("mySearch").pattern; document.getElementById("demo").innerHTML = x; } </script> </body> </html>
