Run results for: replaceAll vs regex replace vs split&join

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) Gecko/20100101 Goanna/6.7 Firefox/128.0 PaleMoon/33.8.0

Browser: Pale Moon (Firefox Variant) 33

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

split&join

323.6M/s

replace regex

1.4M/s

replace All

353K/s

View exact numbers

Test name	Executions per second
✓ split&join	323,635,616 Ops/sec
replace regex	1,445,289 Ops/sec
replace All	353,002 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 {a} is {a} it".replace(/\{a\}/g, "+");
replace All
"this {a} is {a} it".replaceAll("{a}", "+");
split&join
"this {a} is {a} it".split('{a}').join('+');