Run results for: Array split vs string substring

Run details:

User agent: Mozilla/5.0 (Linux; Android 8.0.0; PRA-LA1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.101 Mobile Safari/537.36

Browser: Chrome Mobile 85

Operating system: Android 8.0.0

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Array.split	208717.7 Ops/sec
Substring	264980.0 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("."));