joinClasses: Args vs. Array

JavaScript performance comparison

Revision 2 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  function joinClassesArgs() {
    var className = '';
    if (arguments.length > 0) {
      className = arguments[0];
      for (var ii = 1; ii < arguments.length; ii++) {
        className += ' ' + arguments[ii];
      }
    }
    return className;
  }
  function joinClassesArray(classes) {
    var className = '';
    if (classes.length > 0) {
      className = classes[0];
      for (var ii = 1; ii < classes.length; ii++) {
        className += ' ' + classes[ii];
      }
    }
    return className;
  }
  function joinClassesArrayJoin(classes) {
    return classes.join(' ');
  }
  function joinClassesManual(arg0, arg1, arg2, arg3) {
    var className = arg0 || '';
    if (!arg0) return className;
    if (!arg1) return className;
    className += ' ' + arg1;
    if (!arg2) return className;
    className += ' ' + arg2;
    if (!arg3) return className;
    className += ' ' + arg3;
    return className;
  }

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Args
if (joinClassesArgs('foo', 'bar') !== 'foo bar') {
  throw new Error('Wrong!');
}
pending…
Array
if (joinClassesArray(['foo', 'bar']) !== 'foo bar') {
  throw new Error('Wrong!');
}
pending…
Array (Join)
if (joinClassesArrayJoin(['foo', 'bar']) !== 'foo bar') {
  throw new Error('Wrong!');
}
pending…
Args (Manual)
if (joinClassesManual('foo', 'bar') !== 'foo bar') {
  throw new Error('Wrong!');
}
pending…

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