Run results for: split-join vs regex replace

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:138.0) Gecko/20100101 Firefox/138.0

Browser: Firefox 138

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

replace regex

3.9M/s

split-join

3.5M/s

View exact numbers

Test name	Executions per second
✓ replace regex	3,874,800 Ops/sec
split-join	3,493,848 Ops/sec

Script Preparation code:

String.prototype.replaceAll = function(search, replacement) {
    var target = this;
    return target.replace(new RegExp(search, 'g'), replacement);
};

Tests:

replace regex
"this is it".replace(/ /g, "+");
split-join
"this is it".split(" ").join("+");