https://legacy.forums.gravityhelp.com/topic/add-ean18-barcode-script-for-validation Gravity Support Forums Topic: add EAN18 barcode script for validation en-US Mon, 20 Apr 2026 21:07:42 +0000 http://bbpress.org/?v=1.0.1 q https://legacy.forums.gravityhelp.com/search.php https://legacy.forums.gravityhelp.com/topic/add-ean18-barcode-script-for-validation#post-137416 Thu, 31 Jan 2013 09:29:12 +0000 Chris Hajer 137416@https://legacy.forums.gravityhelp.com/ <p>What sort of script are you talking about for validating that barcode: JavaScript or PHP script? If it's JavaScript you will need to add it on the front end when the form is displayed.</p> <p>If it's PHP, you can use the gform_validation filter to ensure the barcode is in the proper format, and if not, return a validation error: <a href="http://www.gravityhelp.com/documentation/page/Gform_validation" rel="nofollow">http://www.gravityhelp.com/documentation/page/Gform_validation</a> </p> https://legacy.forums.gravityhelp.com/topic/add-ean18-barcode-script-for-validation#post-137243 Thu, 31 Jan 2013 06:37:02 +0000 joeri1977 137243@https://legacy.forums.gravityhelp.com/ <p>Hello,</p> <p>I have created a form, but one input field is a field to add an EAN18 barcode field. This barcode has 18 digits, but I also have a script to validate if the barcode is valid. Is there a way to add this script to this specific field?</p> <p>Best regards,</p> <p>Joeri. </p>