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POIs passing multiple sets of arguments as an array in JavaScript faster than multiple function calls?
 

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  1. POIs passing multiple sets of arguments as an array in JavaScript faster than multiple function calls?
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    <p>After becoming slightly uncomfortable with multiple calls to the same function, with different parameters (as shown in the dom ready section of the code below), I decided to test out passing the parameters for this function by iterating through an array instead (as shown in <code>mouse_function_two</code>). To my surprise I found that <code>mouse_function_two</code> ran considerably faster.</p> <p>My question is, would <code>mouse_function_two</code> be considered better JavaScript practice than <code>mouse_function_one</code>? </p> <p>Note: I am slightly concerned I may not be using firebugs console.time utility correctly! </p> <h3>Initial attempt</h3> <pre><code>function mouse_function_one (hover_selector, class_name, add_link) { hover_item = $(hover_selector) hover_item.each(function(){ $(this).hover( function () { $(this).addClass(class_name); if ( add_link == true ) { $(this).click(function(){ var href = $(this).find('a').attr('href'); window.location.href = href; }); } else return false; }, function () { $(this).removeClass(class_name); }); }); } </code></pre> <h3>Second (faster) attempt:</h3> <pre><code>function mouse_function_two (args) { for (var i=0; i &lt; args.length; i++) { hover_selector = $(args[i][0]); class_name = args[i][1]; add_link = args[i][2]; hover_item = $(hover_selector) hover_selector.each(function(){ $(this).hover( function () { $(this).addClass(class_name); if ( add_link == true ) { $(this).click(function(){ var href = $(this).find('a').attr('href'); window.location.href = href; }); } else return false; }, function () { $(this).removeClass(class_name); }); }); } } </code></pre> <h3>Client code:</h3> <pre><code>// on dom ready $(function(){ console.time('f1'); mouse_function_one('#newsletter .right', 'hovered', true); mouse_function_one('.block-couple div.right', 'hovered', false); mouse_function_one('.bulletin', 'selected', true); console.timeEnd('f1'); //speed is calculated as 104ms args = []; args[0] = ['#newsletter .right', 'hovered', true]; args[1] = ['.block-couple div.right', 'hovered', false]; args[2] = ['.bulletin', 'selected', true]; console.time('f2'); mouse_function_two(args); console.timeEnd('f2'); //speed is calculated as 10ms }); </code></pre>
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    1. USDr. Frankenstein
    1. USDr. Frankenstein
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      1. POIs passing multiple sets of arguments as an array in JavaScript faster than multiple function calls?
      1. USDylanYi
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    1. COdefinitely depends on the JS engine. why don't you benchmark and see for yourself?
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      1. POIs passing multiple sets of arguments as an array in JavaScript faster than multiple function calls?
      1. USMehrdad Afshari
    2. COIs it possible that the time cost here is function invocation?
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      1. POIs passing multiple sets of arguments as an array in JavaScript faster than multiple function calls?
      1. USspender
    3. COAccording to the times in the 3rd code block, method f1 looks to be most winningest. Typo?
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      1. POIs passing multiple sets of arguments as an array in JavaScript faster than multiple function calls?
      1. USspender
 

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