Run results for: Return true vs empty body

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36

Browser: Chrome 53

Operating system: Windows 7

Device Platform: Other

Date tested: 8 years ago

Test name	Executions per second
localUndefinedFunc	9538368.0 Ops/sec
wrapped localUndefinedFunc	9402408.0 Ops/sec

Script Preparation code:

var notDefined;
var defined = 1;

var emptyFunc = function() {};
var trueFunc = function() { return true; }
var undefinedFunc = function() { return undefined; }
var nullFunc = function() { return null; }
var notDefinedFunc = function() { return notDefined; }
var definedFunc = function() { return defined; }
var staticFunc = function() { return 1; }
var localUndefinedFunc = (function() {
  var notDefinedAgain;
  
  return function() {
  	return notDefinedAgain;
  }
})();

Tests:

localUndefinedFunc
localUndefinedFunc();
wrapped localUndefinedFunc
(localUndefinedFunc());

Run results for: Return true vs empty body

localUndefinedFunc

wrapped localUndefinedFunc