Run results for: split vs for loop

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:129.0) Gecko/20100101 Firefox/129.0

Browser: Firefox 129

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

for loop

388.9M/s

split

1.2M/s

View exact numbers

Test name	Executions per second
✓ for loop	388,907,264 Ops/sec
split	1,212,678 Ops/sec

HTML Preparation code:

<script>

var s="Since all three methods have roughly equivalent performance, my preference is to use slice. It supports extracting from the end of the string and I feel that returning an empty string when start index > stop follows the principle of least surprise better than substring's swapping of parameters. I avoid substr because of the browser inconsistency.";
var re=/[\\'!"(),\-.\/:;<=>?\[\]^`{}\s‘’“”]/;
  

</script>

Tests:

split
var a=s.split(re); var i,l=a.lenght,w; for(i=0;i<l;i++){ w=a[i]; };
for loop
var i,l=s.lenght,w,lsp=-1; for(i=0;i<l;i++){ if(re.test(s.charAt(i))){ w=s.slice(lsp+1,i); lsp=i } };