Run results for: Split strings by character count

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Testing Slice, Length 9 kB

479K/s

Testing Slice, Length 100

5K/s

Testing Regex, Length 9 kB

2K/s

Testing Regex, Length 100

2K/s

Testing Regex, Length 10

629/s

Testing Slice, Length 10

465/s

Testing Regex, Length 1

113/s

Testing Slice, Length 1

55/s

View exact numbers

Test name	Executions per second
✓ Testing Slice, Length 9 kB	479,226 Ops/sec
Testing Slice, Length 100	4,541 Ops/sec
Testing Regex, Length 9 kB	2,232 Ops/sec
Testing Regex, Length 100	1,774 Ops/sec
Testing Regex, Length 10	629 Ops/sec
Testing Slice, Length 10	465 Ops/sec
Testing Regex, Length 1	113 Ops/sec
Testing Slice, Length 1	55 Ops/sec

Script Preparation code:

var cnt = 500 * 1024;
var str = []
for(var i=0; i < cnt; i++) {
  str.push( String.fromCharCode(Math.random() * 94 + 32) );
}
str = str.join("");

var regex = function(count) {
  var rgx = new RegExp("[\\s\\S]{1," + count + "}", "g");
  var parts = str.match(rgx);
};

var slice = function(count) {
  var parts = [];
  for(var i = 0, len = str.length; i < len; i += count) {
    parts.push( str.slice(i, i + count) );
  }
};

Tests:

Testing Regex, Length 1
regex(1);
Testing Regex, Length 10
regex(10);
Testing Regex, Length 100
regex(100);
Testing Regex, Length 9 kB
regex(9 * 1024);
Testing Slice, Length 1
slice(1);
Testing Slice, Length 10
slice(10);
Testing Slice, Length 100
slice(100);
Testing Slice, Length 9 kB
slice(9 * 1024);