Run results for: builtin replaceAll vs regex replace

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0

Browser: Firefox 89

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
replace regex	4810645.0 Ops/sec
replace All	7718374.0 Ops/sec
replace All Regex	2013003.0 Ops/sec

Script Preparation code:

String.prototype.replaceAllRegex = 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(" ", "+");
replace All Regex
"this is it".replaceAllRegex(" ", "+");

Run results for: builtin replaceAll vs regex replace

replace regex

replace All

replace All Regex