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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

replace regex

5.3M/s

string split join

4.8M/s

replace All

1.7M/s

View exact numbers

Test name	Executions per second
✓ replace regex	5,326,638 Ops/sec
string split join	4,824,310 Ops/sec
replace All	1,742,954 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("+");