Two new features added: defer and async attributes on the script tag.
The next suggested features have been added to the site: The HTML5 defer and async attributes for the script element (on external JS files).
These attributes allow scripts to be loaded when the DOM is ready or when the file is ready, respectively, without holding up the loading of the page.
These attributes allow scripts to be loaded when the DOM is ready or when the file is ready, respectively, without holding up the loading of the page.