Benchmark Run Result for: For loop comparison

For loop comparison

Date tested: 4 years ago

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Safari/605.1.15

Test name	Executions per second
Normal	2253.5 Ops/sec
Extra assignment	2276.7 Ops/sec

Benchmark definition (click to collapse):

Script Preparation code:

var arr = [];
var n = 0;
var i;
var l;
for (i = 0; i < 1000; i++) {
  arr[i] = i;
}

Tests:

Normal
for (i = 0; i < arr.length; i++) { n += arr[i]; }
Extra assignment
for (i = 0, l = arr.length; i < l; i++) { n += arr[i]; }

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