Benchmark: substring vs regex

Script Preparation code:

var location = "www.example.com";

Tests:

substring
var str=location; if (str.substring(0, 4)=="www.") str = str.substring(4);
regex
var str=location.replace(/^www\./,'');

Rendered benchmark preparation results:

Previous results

Test case name	Result
substring
regex

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Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.10240

Browser/OS: Chrome 42 on Windows

Test name	Executions per second
substring	10804930.0 Ops/sec
regex	5617531.0 Ops/sec

substring vs regex (version: 0)