call vs apply vs direct vs closure direct

JavaScript performance comparison

Revision 21 of this test case created by James Wilkins

Info

Test "call()" vs "apply()" vs calling functions directly (with and without closure).

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    function Obj() {
      this.that = "that";
      var _this = this;
      this.directClosure = function(v) {
        _this.that = v;
      };
    }
    Obj.prototype.test = function(val) {
      this.that = val;
    };
    Obj.prototype.wrapFunc = function(func) {
      this.invokeWrappedFunc = eval("var _this = this; (" + func + ")");
    }
    Obj.prototype.wrapFunc2 = function(func) {
      this.invokeWrappedFunc2 = new Function("_this", "return (" + func + ")");
    }
    var o = new Obj();
    o.wrapFunc(function(v) {
      _this.that = v;
    });
    o.wrapFunc2(function(v) {
      _this.that = v;
    });
};
</script>

Test runner

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

Java applet disabled.

Testing in unknown unknown
Test Ops/sec
apply
Obj.prototype.test.apply(o, ["YES"]);
pending…
call
Obj.prototype.test.call(o, "YES");
pending…
direct
o.test("YES")
pending…
Wrapped Func (eval)
o.invokeWrappedFunc("YES");
pending…
Wrapped Func (new Function)
o.invokeWrappedFunc2("YES");
pending…
Direct Closure
o.directClosure("YES");
pending…

Compare results of other browsers

Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

0 comments

Add a comment