_:n9a76aaddf9e64412a91117762b129804xb4
<http://schema.org/item>
<https://bg.khanacademy.org/computing/computer-programming/html-css-js#html-js-dom-animation>
<https://bg.khanacademy.org/computing/computer-programming/html-css-js/html-js-dom-animation/pt/animating-dom-with-setinterval>