Run results for: Every Third Element

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36

Browser: Chrome 52

Operating system: Windows 7

Device Platform: Other

Date tested: 8 years ago

Test name	Executions per second
Push to new array	13950.0 Ops/sec
Splice	1746399.4 Ops/sec
Filter	1909140.2 Ops/sec

Script Preparation code:

function fillArrayWithNumbers(n) {
        var arr = Array.apply(null, Array(n));
        return arr.map(function (x, i) { return i });
    }

var sourceArray = fillArrayWithNumbers(1000);

Tests:

Push to new array
var targetArray = []; for (var i = 0; i < sourceArray.length; i = i+3) { targetArray.push(sourceArray[i]); };
Splice
for(var i = 0; i < sourceArray.length; i++) { sourceArray.splice(i+1,2); }
Filter
var targetArray = sourceArray.filter(function(_, i) { return (i % 3 == 0); })

Run results for: Every Third Element

Push to new array

Splice

Filter