Run results for: Array split vs string substring

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; Pixel 3a XL) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Mobile Safari/537.36

Browser: Chrome Mobile 84

Operating system: Android

Device Platform: Mobile

Date tested: 4 years ago

Test name	Executions per second
Array.split	917293.3 Ops/sec
Substring	1067229.0 Ops/sec

Script Preparation code:

var s1 = "foo.bar";
var s2 = "foo";

Tests:

Array.split
var n1 = s1.split(".")[0]; var n2 = s2.split(".")[0];
Substring
var n1 = s1.substring(0, s1.indexOf(".")); var n2 = s2.substring(0, s2.indexOf("."));