const func vs var

JavaScript performance comparison

Test case created by DS

Preparation code

Benchmark.prototype.setup = function() {
    var x1 = 500;
    var x2 = function() { return 500; };

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

Testing in unknown unknown
Test Ops/sec
Use var
Math.random() * x1;
Use const func
Math.random() * x2();

You can edit these tests or add even more tests to this page by appending /edit to the URL.

Compare results of other browsers


Comment form temporarily disabled.

Add a comment