Is strict mode more performant?

Question

Does executing javascript within a browser in \'strict mode\' make it more performant, in general? Do any of the major browsers do additional optimisation or use any other t

Answer 1

According to this test "strict mode" can be about 25% faster.

  Q


  Q

This can be tested here: http://jsperf.com/strict-mode

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Interestingly, manipulation of the arguments array can be around 6 times faster in "strict mode"!

Here's the jsPerf test: http://jsperf.com/strict-mode-arguments