Ferna::isString

JavaScript performance comparison

Revision 4 of this test case created by Mikhail Shestakov

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  if (!"dsfsad".isString) {
  	String.prototype.isString = true;
  
  	$ = {};
  
  	$.defineMethod = function(obj, method, fn) {
  		Object.defineProperty(obj, method, {
  			value: fn,
  			enumerable: false
  		});
  	};
  
  	$.defineMethod(window, 'isString', function (value){
  		return typeof value == 'string' || value instanceof String;
  	});
  
  	$.defineMethod(window, 'isString2', function (value){
  		return value.isString? true: false;
  	});
  
  window.isString3 = function(value){return typeof value == 'string' || value instanceof String;}
  }
  
  var a = "DFADSF";
  var b = {c:10};

};
</script>

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
real string instanceof
isString(a);

pending…
real string prop
isString2(a);
pending…
notreal string instanceof
isString(b);
pending…
notreal string prop
isString2(b);
pending…
isString3(a);
pending…
isString3(b);
pending…

Compare results of other browsers

Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL.

0 Comments