Run results for: Return true vs empty body

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36

Browser: Chrome 53

Operating system: Mac OS X 10.12.0

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
emptyFunc	9444917.0 Ops/sec
trueFunc	9237855.0 Ops/sec
undefinedFunc	3261186.0 Ops/sec
nullFunc	9212981.0 Ops/sec
notDefinedFunc	4833769.0 Ops/sec

Script Preparation code:

var notDefined;

var emptyFunc = function() {};
var trueFunc = function() { return true; }
var undefinedFunc = function() { return undefined; }
var nullFunc = function() { return null; }
var notDefinedFunc = function() { return notDefined; }

Tests:

emptyFunc
emptyFunc();
trueFunc
trueFunc();
undefinedFunc
undefinedFunc();
nullFunc
nullFunc();
notDefinedFunc
notDefinedFunc();