Calling function

perf.js

// Benchmarking different ways to call a function.
var context = {}, fb = null;
function test(){}

this.group(
  "Calling function",
  function Normal(x){ return test(x); },
  {
    name: "Function.call()",
    test: function(x){ return test.call(context, x); }
  },
  {
    name: "Function.apply()",
    test: function(x){ return test.apply(context, arguments); }
  },
  {
    name: "bind()",
    setup: function(){ fb = bind(test, context); },
    test: function(x){ fb(x); }
  },
  {
    name: "Function.bind()",
    setup: function(){ fb = test.bind(context); },
    test: function(x){ fb(x); }
  }
);

// utilities
function bind(f, o){
  return function(){ return f.apply(o, arguments); };
}

Benchmark it with http://www.perfjs.com/