In fact it's not really faster, if you run the test several times the results are similar. It's the same thing if you compare the selectors $(this) and $((((th

In fact it's not really faster, if you run the test several times the results are similar. It's the same thing if you compare the selectors $(this) and $((((this)))); I don't know why, but the problem must come from jsperf. Thats why when I use this tool I always run it at least 5 times to be sure.