<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>robert-boehnke</author><text>My gut feeling is that if you rendered the different stages of the animation into multiple images using canvas and just toggled their visibility, you could get better performance.</text><parent_chain><item><author>seanalltogether</author><text>I hate to be &lt;i&gt;that guy&lt;/i&gt; but this takes up 45% cpu under firefox for a simple spin animation.</text></item></parent_chain></comment><story><title>Spin.js, a pure JS spinner</title><url>http://fgnass.github.com/spin.js/</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>tobbez</author><text>I see the same problem in Opera too, except it&apos;s even worse (the animation lags, and it hogs a whole CPU core).&lt;p&gt;Explorer is better than Firefox and Opera, but still pretty high CPU usage.&lt;p&gt;The only browser of the ones I tested that it seems to be relatively fine in is Chrome.</text><parent_chain><item><author>seanalltogether</author><text>I hate to be &lt;i&gt;that guy&lt;/i&gt; but this takes up 45% cpu under firefox for a simple spin animation.</text></item></parent_chain></comment><story><title>Spin.js, a pure JS spinner</title><url>http://fgnass.github.com/spin.js/</url></story>