pre-allocated arrays

JavaScript performance comparison

Revision 33 of this test case created

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Test Ops/sec
empty array
var arr = new Array();
for (var i = 0; i < 10000; i++) {
  arr[i] = i;
}
pending…
pre-allocated array
var arr = new Array(10000);
for (var i = 0; i < 10000; i++) {
  arr[i] = i;
}
pending…
empty literal /w push
var arr = [];
for (var i = 0; i < 10000; i++) {
  arr.push(i);
}
pending…
empty literal
var arr = [];
for (var i = 0; i < 10000; i++) {
  arr[i] = i;
}
pending…
test
var arr = new Array(10000);
for (var i = 0; i < 10000; i++) {
   arr.push(i);
}
pending…

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