Array Size

JavaScript performance comparison

Test case created by APXEOLOG

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Testing in unknown unknown
Test Ops/sec
Dynamic sizing
var arr = [];
for (var i = 0; i < 100; i++) arr[i] = i;
pending…
Predefined size
var arr = new Array(100);
for (var i = 0; i < 100; i++) arr[i] = i;
pending…
Predefined size with short form
var arr = [];
arr.length = 100;
for (var i = 0; i < 100; i++) arr[i] = i;
pending…

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