function declaration vs function expression

JavaScript performance comparison

Revision 34 of this test case created by sk

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var expression = function() {
    alert("yo");
  };
  
  function declaration() {
    alert("yo");
  };
  var decExp = function decExp() {
    alert("yo");
  };
  
  var blups = (function getfn() {
    return function blups() {
      alert("yo");
    };
  }());
  
  var blaps = (function getfn() {
    var blaps = function blaps() {
      alert("yo");
    };
  
    return blaps;
  }());

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
function declaration
function myfunc() {
  alert("yo");
}
myfunc();
pending…
function expression
var myfunc = function() {
  alert("yo");
}

myfunc();
pending…
IIFE
(function() {
  alert("yo");
})();
pending…
function declaration & expression
var myfunc = function myfunc() {
  alert("yo");
}

myfunc();
pending…
function declaration call
declaration();
pending…
function expression call
expression();
pending…
function declaration & expression call
decExp();
pending…
named iife parens inside
blups();
pending…
next
blaps();
pending…

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Revisions

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