String.fromCharCode Test

JavaScript performance comparison

Revision 4 of this test case created by

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
Concatenate String
var s = "";
for(var i=0,l=chars.length; i<l; i++)
    s += String.fromCharCode(chars[i]);
pending…
Join Array
var a = []
for(var i=0,l=chars.length; i<l; i++){
    a.push( String.fromCharCode(chars[i]) )
}
var s = a.join('')
pending…
fromCharCode Apply with window
var s = String.fromCharCode.apply(window, chars);
pending…
fromCharCode Apply
var s = String.fromCharCode.apply(null, chars);
pending…
fromCharCode Call
var s = String.fromCharCode.call(null, chars);
pending…
one single call
String.fromCharCode(97)
pending…

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