Javascripts must not be placed directly in the source code of the site, they must be moved to external files attached to the source code of the site in the
section. Moving javascript to external files allows you to optimize the site’s loading speed. achieving code validity, increases clarity and allows you to avoid duplication of dynamic activities on the page. Javascripts must not be placed in the source code in the form of or inside individual tags, for example in the form of onmouseclick=””.

