.replace() vs. .split().join() vs .replaceAll()

JavaScript performance comparison

Revision 29 of this test case created

Info

A solution for replacement of strings.

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var mystring = 'okay.this.is.a.string';
    var dynamicRegex = new RegExp(".", "gm");
    var staticRegex = /\./g;
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
.replace(/\./g,' ')
result = mystring.replace(/\./g, ' ');
pending…
.replace(new RegExp(".","gm")," ")
result = mystring.replace(new RegExp(".", "gm"), " ");
pending…
.split('.').join(' ')
result = mystring.split('.').join(' ');
pending…
Stored Dynamic Regex
result = mystring.replace(dynamicRegex, " ");
pending…
Stored static Regex
result = mystring.replace(staticRegex, " ");
pending…
String replace
result = mystring.replace('.', ' ');
pending…
For-Loop-Self-Cutter
for (var i = 0, result = '', l = mystring.length; i < l; ++i) {
  i += mystring[i] == ".";
  result += mystring[i];
}
pending…

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