Document Object Model (DOM) Manipulation In Client Scripts

Rule ID #

SN-0019

Impact #

This customization technique gives a lot of control, but does frequently cause upgrade challenges. It is recommended not to use jQuery, PrototypeJS, gel and other techniques.

Remediation #

Avoid Document Object Model (DOM) manipulation if possible. It can cause a maintainability issue when the instance is updated. The only exception is when you are in charge of the DOM: in UI Pages, and the Service Portal. Instead, use the GlideForm API or consider a different approach for the solution. In general, when using DOM manipulation methods, you have to reference an element in the DOM by id or using a CSS selector. When referencing out-of-box DOM elements, there is a risk that the element ID or placement within the DOM could change thus causing the code to stop working and/or generate errors. If DOM manipulation is done, it needs to be done with forethought, caution, and a full understanding of the risk you are incurring. Review these objects and reduce the use of DOM manipulation methods as much as possible.

Time to fix #

50 min