decrement array length vs splice -1

JavaScript performance comparison

Test case created by ldstudio-ca

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Test Ops/sec
Decrement Array
var a = new Array(2000);


for(var x=0;x<a.length;x++){
        a[x] = Math.floor(10 + Math.random() * 100);
}

while (a.length > 0) {
  --a.length;
}
pending…
Splice Array
var a = new Array(2000);


for(var x=0;x<a.length;x++){
        a[x] = Math.floor(10 + Math.random() * 100);
}

while (a.length > 0) {
  a.splice(-1);
}
pending…

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