Run results for: For loop inline array.length vs captured variable

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36

Browser: Chrome 55

Operating system: Windows

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
Inline	2218.7 Ops/sec
Captured	2747.1 Ops/sec

Script Preparation code:

var a = [];
for (var i = 0; i < 1000; i++) {
  a.push(Math.random());
}

Tests:

Inline
for (var i = 0; i < a.length; i++) { a[i] = a[i] * Math.random(); }
Captured
for (var i = 0, ilen = a.length; i < ilen; i++) { a[i] = a[i] * Math.random(); }