Array Iteration (v32)

Revision 32 of this benchmark created on

Description

Compare iterating forward or backwards of an array

Setup

var sum = 0.1;
    var arr = [];
    for (var i = 0; i < 10000; ++i) {
      arr.push(1);
    }

Test runner

Ready to run.

Testing in
TestOps/sec
forwards
for (var i = 0; i < arr.length; ++i) {
sum += arr[i];
}
ready
backwards
for (var i = arr.length - 1; i >= 0; --i) {
sum += arr[i];
}
ready
Hard Coded Forward
for (var i = 0; i < 10000; ++i) {
sum += arr[i];
}
ready
Cached Forward Iteration
for(var i=0, c=arr.length; i<c; i++){
sum += arr[i];
}
ready
cached forward 2
var c = arr.length
for(var i=0; i<c; i++){
sum += arr[i];
}
ready
for-in
for(var i in arr){
sum += arr[i];
}
ready
while
var i = 0;
while(i < arr.length){
sum += arr[i++];
}
ready
forEach
arr.forEach(function(a,i,arr){
sum += a;
});
ready

Revisions

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