newarrayassign

JavaScript performance comparison

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Test Ops/sec
length set at start
var n = 100000, arr = new Array(n);
for (var i = 0; i < n; ++i) {
    arr[i] = i;
}
 
pending…
length increased each iteration
var n = 100000, arr = [];
for (var i = 0; i < n; ++i) {
    arr[i] = i;
}
 
pending…

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