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: 8 years ago

Test name	Executions per second
emptyFunc	10397244.0 Ops/sec
trueFunc	10530853.0 Ops/sec
undefinedFunc	3611484.5 Ops/sec
nullFunc	10542859.0 Ops/sec
notDefinedFunc	5605625.5 Ops/sec
definedFunc	3799971.5 Ops/sec
staticFunc	10188392.0 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; }

Tests:

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