Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var str = "abc def",
        nan = +str;
    
    function _isNaN(a) {
        return !(1 > a || 1 < a || 1 == a);
    };
    function _isNaN2(a) {
        a = +a;
        return !(1 > a || 1 < a || 1 == a);
    };
  };
</script>

Test runner

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var a = isNaN(nan);

var a = !(1 > nan || 1 < nan || 1 == nan);

var a = _isNaN(nan);

var a = isNaN(str);

var a = !(1 > str || 1 < str || 1 == str);

var a = _isNaN(str);

var nan2 = +str;
var a = !(1 > nan2 || 1 < nan2 || 1 == nan2);

var a = _isNaN2(nan);

var a = _isNaN2(str);

var nan2 = +nan;
var a = !(1 > nan2 || 1 < nan2 || 1 == nan2);

var myStr = +str;
var a = !(1 > myStr || 1 < myStr || 1 === myStr);

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Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

• Revision 1: published on 19th December 2012
• Revision 2: published on 27th December 2012

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