I call linkbait/trollbait.

> People often throw around the statement “The DOM is slow”. This is a completely false statement. Utterly stupid. Look: http://jsfiddle.net/YNxEK/. Ten THOUSAND divs in about 200 milliseconds.

How is that even an argument? Just because you can insert a fragment containing 10k <div>s in 200 milliseconds doesn’t mean that the DOM is not slow compared to other operations in JavaScript.

DOM operations are still the slowest operations you can perform using JavaScript in a web browser.