String.fromCharCode Test

JavaScript performance comparison

Revision 23 of this test case created by Mark

Preparation code

<script>
  var chars = [123, 34, 122, 34, 58, 34, 115, 101, 99, 111, 110, 100, 84, 97, 98, 34, 44, 34, 97, 34, 58, 34, 110, 111, 110, 101, 34, 44, 34, 98, 34, 58, 117, 110, 100, 101, 102, 105, 110, 101, 100, 44, 34, 101, 34, 58, 117, 110, 100, 101, 102, 105, 110, 101, 100, 125];
</script>
    

Test runner

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Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Using a loop
var s = "";
for (var i = 0, l = chars.length; i < l; i++)
  s += String.fromCharCode(chars[i]);
pending…
Using apply
var s = String.fromCharCode.apply(null, chars);
pending…
Apply with window
var s = String.fromCharCode.apply(window, chars);
pending…
				var s = "";
				var i, j, temparray, chunk = 1024;
				for (i = 0, j = chars.length; i < j; i += chunk) {
				  temparray = chars.slice(i, i + chunk);
				  s += String.fromCharCode.apply(null, new Uint16Array(temparray));
				}
pending…

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