Fastest for loops

Benchmark created on

Setup

Benchmark.prototype.setup = function() {
  
            
      // Populate the base array
      var arr = [];
      for (var i = 0; i < 1000; i++) {
        arr[i] = i;
      }
    
      function someFn(i) {
        return i * 3 * 8;
      }
  
          
    };

Test runner

Ready to run.

Testing in
TestOps/sec
For len defined in loop
for (var i = 0, len = arr.length; i < len; i++) {
  someFn(arr[i]);
}
ready
For increase, without len predefined
for (var i = 0; i < arr.length; i++) {
  someFn(arr[i]);
}
ready
For increase, var predefined outside loop
var len = arr.length;
for (var i = 0; i < len; i++) {
  someFn(arr[i]);
}
ready

Revisions

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