check for infinity

Benchmark created on

Preparation HTML

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

<script>
  var n = Infinity;
  var isFinite2 = null;
  
  if ( $.browser.mozilla ) {
  isFinite2 = isFinite;
  } else {
  isFinite2 = function(n) {
  return (n === n && n !== Infinity && n !== -Infinity);
  }
  }
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
isFinite
var r = isFinite( n );
ready
manual check
var r = n === n && n !== Infinity && n !== -Infinity
ready
browser specific
var r = $.browser.mozilla ? isFinite(n) : (n === n && n !== Infinity && n !== -Infinity);
ready
browser specific isFinite
var r = isFinite2( n );
ready

Revisions

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