insertAdjacentHTML() is a built-in JavaScript DOM method that allows you to insert HTML content into a document at a specific position relative to an existing element without removing existing elements or event handlers.

It is a safer and more performant alternative to innerHTML in most real-world applications.

element.insertAdjacentHTML(position, htmlString);

Safe Use:

• Use only trusted server content

• Or sanitize before inserting

• Or use DOM creation methods