Run results for: array.includes vs array.indexOf

Run details:

User agent: Mozilla/5.0 (X11; CrOS i686 7834.70.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36

Browser: Chrome 49

Operating system: Chrome OS 7834.70.0

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
includes	31252596.0 Ops/sec
indexOf	31295538.0 Ops/sec

Script Preparation code:

var a = Array(10000).fill(undefined).map((_, i) => i);

Tests: