End of Support for JavaScript, iFrames, CSS, and Other Advanced Markup in HTML Area Home Page Components

We are now enforcing the ban on unsupported code in HTML Area home page components. JavaScript, CSS, iframes, and other unsupported markup is now removed when you edit and save an HTML Area home page component. A cleaned version is saved, and all unsupported content is lost.
Available in: All Editions

In Summer ’14, we replaced the rich text editor in HTML Area home page components and notified you that we would start removing unsupported code in Summer ’15. (See “Home Page Components” in the Summer ’14 release notes.)

At runtime, HTML Area home page components that contain unsupported markup are dynamically stripped upon rendering.

To use JavaScript or other advanced HTML elements in a home page component, we recommend that you use a Visualforce Area component instead.