eachとfor

JavaScript performance comparison

Test case created

Preparation code

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

Preparation code output

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Testing in unknown unknown
Test Ops/sec
a1

                var imgs       = $('#demo2 .promo li');
                var dlyTime    = 100;
                var fadeInTime = 500;
               
                imgs.hide();
                for(var i = 0; i < imgs.length; i++) {
                        imgs.eq(i).delay(i * dlyTime).fadeIn(fadeInTime);
                }              

 
pending…
a2

                var imgs       = $('#demo2 .promo li');
                var dlyTime    = 100;
                var fadeInTime = 500;          
               
    imgs.hide();
                imgs.each(function(i) {
                        $(this).delay(i * dlyTime).fadeIn(fadeInTime);
                });
 
pending…

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