gistfile1.txt

// ----
var start = new Date();
// ----

var size = 10000;

var a = [];
for (var i = 0; i < size; i++) {
	a.push(i);
}

while (a.length) {
	var r = Math.floor(a.length / 2);
	a.splice(r, 1);
}

// ----
var end = new Date();
console.log("Operation took " + (end.getTime() - start.getTime()) + "ms");
// ----