Use your custom element wherever you like on your page, just like you would any regular HTML element. RDF is a standard model for data interchange on the Web. There is potential for this to become an attack vector on a site, creating a potential security risk. Last modified: Sep 28, 2022, by MDN contributors. attack, the result is harmless. Frequently asked questions about MDN Plus. I then make this grid item into a grid, giving it column tracks that are a subgrid and defining rows as normal. Note: This is a security risk if the string to be inserted might contain potentially malicious content. use the method insertAdjacentHTML(). Standards Track [Page 29], Gregorio, et al. "