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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36

Browser: Chrome 117

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
replace regex	12393124.0 Ops/sec
replace All	4715893.0 Ops/sec
string split join	14890869.0 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, "+");
replace All
"this is it".replaceAll(" ", "+");
string split join
"this is it".split(" ").join("+");

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

replace regex

replace All

string split join