Web Add-in Extensibility Developer Guide > Working with Web Add-in Extensibility > Developing Support for Your Toolkit > About Custom Toolkit Support > Developing Browser-Independent Support

Developing Browser-Independent Support

Many Web controls are implemented differently and operate differently on different browsers, because of the way different DOM properties are implemented on the different browsers.

To enable your custom support to work for Microsoft Internet Explorer, Google Chrome, and Mozilla Firefox, you must address the following: