Empty array

JavaScript performance comparison

Revision 127 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var arr = [{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"},{a: 1, b: "2"}];
  
  var fn = function(xs){
    if (xs.length) { alert(xs); }
    try { xs.toString(); } catch(e){}
  };

};
</script>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
length
arr.length = 0;
fn(arr);
pending…
splice
arr.splice(0, arr.length);
fn(arr);
pending…
pop
while (arr.length > 0) {
  arr.pop();
}
fn(arr);
pending…
shift
while (arr.length > 0) {
  arr.shift();
}
fn(arr);
pending…

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