After making a page with a lot of heavy Javascript, I discovered that Firefox is the slowest web browser for rendering Javascript. In more detail, I have some complicated javascript that modifies the DOM of a document. Firefox takes some 20 seconds to do a full run; MSIE 9 can do it in about nine seconds. The other three are lightning fast; Chrome can do it in about three seconds, Safari in two seconds, and Opera only takes about 1.5 seconds to run the same Javascript.
The main thing I like about Firefox is that it has a lot of add-ons and the ability to force all pages to be rendered using Verdana; then again, I like Opera because it looks to be the most lightweight browser to support modern web standards, as well as the fastest Javascript performance.
To post a comment about an entry, send me an email and I may or may not post your comment (with or without editing)