Customizing can be done in several different ways. It is important to consider all the alternatives available when deciding on a method to accomplish form customization.

Although JavaScript will accomplish the task, it is important to note that your scripts are not subjected to formal testing by the frevvo quality assurance team. Choosing an approach that is part of the product like Business Rules is a better choice than adding JavaScript since released versions undergo rigorous quality assurance testing. Customizations using JavaScript should only be used under special situations and if there is no other way to customize the form to the requirements.

For example, let's say you have a message control in your form that contains markup to pull a custom JavaScript. The URL for the script contains the home directory and revision number - (http://localhost:8080/frevvo/js-24487/libs/script.js). An upgrade of to new release or revision version could potentially stop the form from working.

If you choose to add JavaScript, we strongly recommend that you are familiar with a JavaScript debugger / web development tool for your browser.

Here are some real world situations where custom JavaScript can be used in a form. The custom JavaScript can be added to the form using the message control or uploaded by a designer to an application. Tenant admins or the in-house superuser can upload the custom script to the tenant. Refer to Customizing Behavior for more information.

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