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  • Rails only returns blank page

    - by user2793027
    I am new to Ruby on Rails and am trying to find all the orders for a given customer and then search through their order and total it all up. However when I try and test the page I only get a blank page, can anyone tell me why that might be? Also I am running Rails v. 2.3.14 <% # custdisplay.html.erb.rb %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head profile="http://gmpg.org/xfn/11"> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> </head> <body> <% # get the customer data from the customer table @custdata = Customer.find(@data) @orderinfo = Order.find(:all, :conditions => ["customer_id = ?",@custdata.id]) for i in [email protected] @total[i] = 0 @orderparts = Orderline.find(:all, :conditions => ["id = ?", @orderinfo[i].id]) for j in [email protected] @total[j] += @orderparts[i].quantity * @orderparts[i].price end end #for each quanity need to add up the part if @ordertotals.length > 0 %> <h1>customer data for customer: <%=@data %></h1> <table border=1> <tr> <td>Order Number</td> <td>Order Date</td> <td>Cost of Order</td> </tr> <% # for each customer who has this sales rep # display each customer in a row for @orderinfo in @ordertotals %> <tr> <td><%[email protected]%></td> <td><%[email protected]_date%></td> <td><%[email protected]%></td> </tr> <% end %> </table> <% else # no customers with this sales rep %> <h1>NO CUSTOMERS FOR SALES REP <%=@salesrepcust%></h1> <% end %>

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  • MooTools request fails

    - by acoder
    Hi everyone, I am trying to achieve this task using MooTools. Description: I have three buttons. Two buttons outside myDiv and one button inside myDiv. A click on any of these buttons initiates an AJAX request (passing button variable to "button.php") and updates myDiv content based on the response text. So, after update, myDiv shows Button3 link + a message showing which button has been clicked. The problem: Everything seems to work fine but after several clicks, it happens that myDiv shows loader.gif image and stops. After this, if I wait a few moments, the browser sometimes stops working (gets blocked). I noticed this problem with IE6. Does anyone know what does this problem mean and how it can be avoided? index.html <html> <head> <script type="text/javascript" src="mootools/mootools-1.2.4-core-nc.js"></script> <script type="text/javascript" src="mootools/mootools-1.2.4.4-more.js"></script> <script type="text/javascript"> window.addEvent('domready', function() { $("myPage").addEvent("click:relay(a)", function(e) { e.stop(); var myRequest = new Request({ method: 'post', url: 'button.php', data: { button : this.get('id'), test : 'test' }, onRequest: function() { $('myDiv').innerHTML = '<img src="images/loader.gif" />'; }, onComplete: function(response) { $('myDiv').innerHTML = response; } }); myRequest.send(); }); }); </script> </head> <body> <div id="myPage"> <a href="#" id="button1">Button1</a> <a href="#" id="button2">Button2</a> <div id="myDiv"> <a href="#" id="button3">Button3</a> </div> </div> </body> </html> button.php <a href="#" id="button3"Button3</a> <br><br> <?php echo 'You clicked ['.$_REQUEST['button'].']'; ?>

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  • Mercurial Branching Oddity

    - by Steve Horn
    I'm trying to understand why the below is occuring: It appears that I have started another branch, but it has no name, and I do not remember creating a new branch. Why did this new head(branch) get created? How do I keep it from happening?

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  • MapReduce programming system in java-actionscript

    - by eco_bach
    Just finished reading ch23 in the excellent 'Beautiful Code' http://oreilly.com/catalog/9780596510046 on Distributed Programming with MapReduce. I understand that MapReduce is a programming system designed for large-scale data processing problems, but I have a hard time getting my head around the basic examples given and how I might apply them in real world situations. Can someone give a simple example of MapReduce implemented using either java, javascript or actionscript?

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  • Jquery draggable + toggleClass problem..

    - by vrynxzent
    the problem here is that the toggleClass position top:0px; left:0px will not trigger.. only the width and height and background-color will activate.. it will work if i will not drag the div(draggable).. if i start to drag the element, the toggled class positioning will not effect.. i dont know if there's such a function in jquery to help this.. <html> <head> <title></title> <script type="text/javascript" src="jquery-1.4.2.js"></script> <script type="text/javascript" src="jquery.ui.core.js"></script> <script type="text/javascript" src="jquery.ui.widget.js"></script> <script type="text/javascript" src="jquery.ui.mouse.js"></script> <script type="text/javascript" src="jquery.ui.resizable.js"></script> <script type="text/javascript" src="jquery.ui.draggable.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("#x").draggable().dblclick(function(){ $(this).toggleClass("hi"); }); }); </script> <style> .hello { background:red; width:200px; height:200px; position:relative; top:100px; left:100px; } .hi { background:yellow; position:relative; width:300px; height:300px; top:0px; left:0px; } </style> </head> <body> <div id="x" class="hello"> </div> </body> </html>

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  • Can the google map API return a street address that was clicked.

    - by Code
    Hi guys, I'm trying to work out an app design in my head and I would like the user to be able to click there destination address on the map of there area. If I know the user is in Liverpool is it possible to pop up the map over liverpool and then allow the user to select on the map where they wanna go, and the google map/api return the street or the name of the area? I've never used googlemap/api yet so just wondering if this kind of thing is possible on the iphone yet. Many Thanks -Code

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  • Jetty servlet respons to Ajax always empty

    - by chris
    Hi I try to run a java server on Jetty which should respond to an ajax call. Unfortunately the response seems to be empty when I call it with ajax. When I call http://localhost:8081/?id=something I get an answer. The Java Server: public class Answer extends AbstractHandler { public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { String id = request.getParameter("id"); response.setContentType("text/xml"); response.setHeader("Cache-Control", "no-cache"); response.setContentLength(19+id.length()); response.setStatus(HttpServletResponse.SC_OK); response.getWriter().write("<message>"+id+"</message>"); //response.setContentType("text/html;charset=utf-8"); response.flushBuffer(); baseRequest.setHandled(true); } public static void main(String[] args) throws Exception { Server server = new Server(8081); server.setHandler(new Answer()); server.start(); server.join(); } } The js and html: <html> <head> <script> var req; function validate() { var idField = document.getElementById("userid"); var url = "validate?id=" + encodeURIComponent(idField.value); if (typeof XMLHttpRequest != "undefined") { req = new XMLHttpRequest(); } else if (window.ActiveXObject) { req = new ActiveXObject("Microsoft.XMLHTTP"); } req.open("GET", "http://localhost:8081?id=fd", true); req.onreadystatechange = callback; req.send(null); } function callback() { if (req.readyState == 4) { if (req.status == 200) { var message = req.responseXML.getElementsByTagName("message")[0]; document.getElementById("userid").innerHTML = "message.childNodes[0].nodeValue"; } } } </script> </head> <body onload="validate('foobar')"> <div id="userid">hannak</div> </body> </html> I'm actually don't know what I'm doing wrong here. Maybe someone has a good idea. greetings chris

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  • Why jQuery selector can't work but getElementById works in this scenario?

    - by Stallman
    Here is the HTML: <html> <head> <script type="text/javascript" src="jquery-1.7.2.min.js"></script> <script type="text/javascript" charset="utf-8" src="jquery-1.7.2.js"></script> <script type="text/javascript" src="access.js"></script> </head> <body> <button id="trigger"></button> <img id= "testElement" style= "position: absolute; border-color: white; top:340px; left:615px;" width="34px" height= "34px" /> </body> </html> And the access.js file is: $(document).ready( function(){ $('#trigger').click(function(){ $('#testElement').src="success.png"; //THIS WON'T WORK. document.getElementById('testElement').src= "success.png"; //BUT THIS WORKS. }); }); I know that if I use $, the return object is a jQuery object. It's not the same as getElementById. But why the jQuery selector can't work here? I need the jQuery object to make more operations like "append/style"... Thanks. UPDATE Too much correct answers appear at almost the same time... Please give more explanations to let me decide who I should give the credit, thanks!!! Sorry for my poor understanding of your correct answer... I just want more detail. Are all the attribute nodes(src/width/height...) not the property of jQuery object? So does the jQuery selector only select DOM Element Node like ? Thank you! 3. List item

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  • Bug in Safari: options.length = 0; not working as expected in Safari 4

    - by Stefan
    This is not a real question, but rather an answer to save some others the hassle of tracking this nasty bug down. I wasted hours finding this out. When using options.length = 0; to reset all options of a select element in safari, you can get mixed results depending on wether you have the Web Inspector open or not. If the web inspector is open you use myElement.options.length = 0; and after that query the options.length(), you might get back 1 instead of 0 (expected) but only if the Web Inspector is open (which is often the case when debugging problem like this). Workaround: Close the Web Inspector or call myElement.options.length = 0; twice like so: myElement.options.length = 0; myElement.options.length = 0; Testcase: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <title>Testcase</title> <script type="text/javascript" language="javascript" charset="utf-8"> function test(el){ var el = document.getElementById("sel"); alert("Before calling options.length=" + el.options.length); el.options.length = 0; alert("After calling options.length=" + el.options.length); } </script> </head> <body onLoad="test();"> <p> Make note of the numbers displayed in the Alert Dialog, then open Web inspector, reload this page and compare the numbers. </p> <select id="sel" multiple> <option label="a----------" value="a"></option> <option label="b----------" value="b"></option> <option label="c----------" value="c"></option> </select> </body> </html>

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  • Reloading a Flickr request from author

    - by user1797325
    I have my flickr gallery coded, but I want to be able to click on the Author's name and the page will reload just with the images from that author. Here is my current code <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>Outbrain Test Gallery</title> <link href="styles.css" rel="stylesheet" type="text/css" /> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script src="jquery.masonry.min.js"></script> <script type="text/javascript"> $(window).load(function(){ $('#flkr').masonry({ // options itemSelector : '.tiles', isResizable: true, }); }); </script> <script type="text/javascript">$(document).ready(function() { $('<ul />').prependTo('#flkr'); $.getJSON('http://api.flickr.com/services/feeds/photos_public.gne?lang=en-us&format=json&jsoncallback=?', function(data) { $.each(data.items, function(i,item) { var squares = (item.media.m).replace('_m.jpg', '_q.jpg'); if(i <= 20){ $('<img/>').attr({ alt: item.title, src: squares, height: '150', width: '150' }).appendTo('#flkr ul').wrap('<li class="tiles"><a href="' + item.link + '"></a><p class="title">' + item.title + '</p><p class="author"><strong>By:</strong> ' + item.author + '</p><p class="date"><strong>Uploaded: </strong>' + item.published + '</p></li>'); } }); }); }); </script> </head> <body> <ul id="flkr"></ul> </body> </html>

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  • Video playback with jQuery Mobile and Phonegap

    - by aritchie
    I'm fairly new to mobile apps, so am trying to knock up a simple video player using Phonegap and jQuery Mobile. The problem is, jQuery mobile appears to be blocking the video playback for some reason. To troubleshoot I stripped it right back to the following HTML, but get the same result, ie a black rectangle where the video should be, but no video playback or controls. <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <meta name="viewport" content="width=device-width,initial-scale=1"/> <link rel="stylesheet" type="text/css" href="css/index.css" /> <link rel="stylesheet" href="css/jquery.mobile-1.2.0.min.css" /> <script type="text/javascript" src="cordova-2.2.0.js"></script> <script type="text/javascript" src="js/index.js"></script> <script src="js/jquery-1.8.3.min.js"></script> <script src="js/jquery.mobile-1.2.0.js"></script> <title></title> </head> <body> <div> <video controls autoplay> <source src="video/video1.mp4" type="video/mp4" > </video> </div> </body> </html> If I remove the link to jquery.mobile-1.2.0.js the video shows up and plays, otherwise, just the black rectangle. I don't know jQuery mobile at all, but searching in the js for a reference to the video elements doesn't show up, so I've no idea what is blocking it. The code works fine in Chrome and Firefox. There are no console messages in Xcode. I also tried hooking up to http://debug.phonegap.com/ but this gave no error messages either. Any ideas??

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  • Eclipse BIRT - XHTML output

    - by Etienne
    Is there a way to set BIRT to output a report as XHTML (1.0 Transitional would be fine) instead of HTML? I did a few tests and there are some elements that are not valid:head does not include a title, html must have a namespace (xmlns) attribute Is this functionality supported at all by BIRT?

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  • [jQuery] JS inside the template

    - by Martin Trigaux
    Hello, I'm trying to include some javascript code inside a template. The code of my html page : <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html;charset=utf-8" /> <script type="text/javascript" src="jquery-1.4.2.min.js"></script> <script type="text/javascript" src="jquery-jtemplates.js"></script> </head> <body> <div id="infos"></div> <div id="my_template"></div> <script type="text/javascript"> $(document).ready(function() { $('#my_template').setTemplateURL("my_template.html"); try { $('#my_template').processTemplate({'var' : 1}); } catch (e) { $('#infos').html('error : '+e); } $('#my_button').click(function(){ alert('it works outside'); }); }); </script> </body> </html> and the template content of the template<br/> {#if $T.var == 1} <script type="text/javascript"> $(document).ready(function() { $('#my_button').click(function(){ alert('it works inside'); }); }); </script> <input type='submit' id='my_button' value='click me' onclick='alert("direct");'/> {#else} not working {#/if} produce me an error inside the infos balise error : SyntaxError: missing } after function body if I just put alert('it works inside'); inside the script balise (remove all the jquery related code), the page load, the two message "direct" and "it works outside" are showed but not "it works inside" message. It's suppose to works as said on the doc page Allow to use JavaScript code in templates Thank you

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  • Returning the Name of a column header

    - by Jason Kelly
    I need your help, Given the html table below, how can I create a javascript function that will, at the click of a mouse, alert me the name of the column header? Ie. if I click on the COLORS header, a javascript box will popup and alert("COLORS")? <html> <head> </head> <body> <table border="1" cellspacing="1" width="500"> <tr> <td>FRUITS</td> <td>COLORS</td> <td>VEGGIES</td> <td>NUMBERS</td> </tr> <tr> <td>apples</td> <td>red</td> <td>carrots</td> <td>123</td> </tr> <tr> <td>oranges</td> <td>blue</td> <td>celery</td> <td>456</td> </tr> <tr> <td>pears</td> <td>green</td> <td>brocoli</td> <td>789</td> </tr> <tr> <td>mangos</td> <td>yellow</td> <td>lettuce</td> <td>098</td> </tr> </table> </body> </html>

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  • How to create a hover effect in a newsletter?

    - by Moak
    I'm creating a newsletter, and i want to have panels that change background-color on mouse over. Seeing as the newsletter wont have a head, I am defining all styles inline. I'm pretty sure most popular mail clients will block JS. So I was wondering if I can define a hover effect in the style attribute. Or is there any other solution to achieve this effect? Peace

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  • Drag and drop game - why isn't it working now I've moved it to another domain?

    - by vward
    Earlier this year I did some work on a drag and drop game. It was the first thing I'd coded other than basic html. I got it working but then had to put it to one side for a while. I've now come back to work on it. The game I had created was put on the ftp of a domain I no longer have. I took the html and image files and put them on another domain expecting them to work. However now nothing drags! I don't know what could be different. I can barely remember how I coded this in the first place. Is there an additional file that should be on the ftp or something like that? Can anyone shed any light? Thanks Vic Game: http://www.vic-taylor.com/dolls/doll6.html Code: <!doctype html> <html lang="en"> <head> <script src="http://code.jquery.com/jquery.min.js"></script> <script src="http://code.jquery.com/ui/1.8.17/jquery-ui.min.js"></script> <script> $(function() { $( "#draggable" ).draggable() }); </script> <script> $(function() { $( "#draggable2" ).draggable(); }); </script> <script> $(function() { $( "#draggable3" ).draggable(); }); </script> <script> $(function() { $( "#draggable4" ).draggable(); }); </script> <script> $(function() { $( "#draggable5" ).draggable(); }); </script> </head> </body> <div id="bodies/palepd.gif"> <img src="bodies/palepd.gif" class="ui-widget-content" id="draggable"> <img src="bodies/trousers.gif" class="ui-widget-content" id="draggable2"> <img src="bodies/top.gif" class="ui-widget-content" id="draggable3"> <img src="bodies/dress.gif" class="ui-widget-content" id="draggable4"> <img src="bodies/coat.gif" class="ui-widget-content" id="draggable5"> </div> </body>

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  • Local and global variables in javascript

    - by caramel1991
    Today,I started to code a page that prompt the user to choose their PC spec,and the code is as follow <html> <title>Computer Specification Chooser</title> <head> <script type="text/javascript"> var compSpec = document.compChooser; function processorUnavailable_onclick() { alert("Sorry that processor speed is currently unavailable"); compSpec.processor[2].checked = true; } </script> </head> <body> <form name="compChooser"> <p>Tick all components you wan included on your computer</p> <p> DVD-ROM <input type="checkbox" name="chkDVD" value="DVD-ROM" /> <br /> CD-ROM <input type="checkbox" name="chkCD" value="CD-ROM" /> <br /> Zip Drive <input type="checkbox" name="chkZIP" value="ZIP DRIVE" /> </p> <p> Select the processor speed you require <br /> <input type="radio" name="processor" value="3.8" /> 3.8 GHZ <input type="radio" name="processor" value="4.8" onclick="processorUnavailable_onclick()" /> 4.8 GHZ <input type="radio" name="processor" value="6" /> 6 GHZ </p> <input type="button" name="btnCheck" value="Check Form" /> </form> </body> </html> The problem I'm facing is on the function that I've tie to the event handler,when I try to choose the radio button of the processor value 4.8 GHZ,yes it alert me with the message inside the function,but after that,it doest not execute the next statement inside the function,that is to check the next processor value 6 GHZ. I've try my effort to change it and test on it,and find out when I set the var compSpec = document.compChooser as a local variable inside the function instead of a global variable,the next statement could be executed. But I thought for a global variable,it is accessible in everywhere on the page and also inside a function.But why now I can't accesses it inside my function??Any idea?? Besides,I stumble upon a weird article while googling,it says that when a global variable is created,it is added to window object.I just curious why this happen??And what's the benefits and uses of it?? THANK YOU

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  • HTML Aligning Text

    - by nevillejones
    I want to display text on a page like in the following way: My Text: Text Here My Text: More Text Here......................................................... Text from line above continued here. I have the following markup just to test: <html> <head> <style type="text/css"> body { font-family: arial; } form div { padding: 3px; } form .label { float: left; text-align: right; width: 150px; margin-right: 8px; } </style> </head> <body> <form> <div class="label">My Text:</div> <div>Aenean tellus diam, pharetra sed posuere sed, ullamcorper eget enim. Suspendisse quis posuere nisi. Integer sodales neque id erat luctus suscipit. Curabitur in nisi arcu. Curabitur suscipit tellus non lectus blandit non mollis risus aliquet. Proin et felis nulla. Integer ut felis nibh, eu condimentum elit. Sed tincidunt fermentum lorem, convallis ornare ipsum mattis sed. Vestibulum vel quam sed velit condimentum volutpat eu sed enim. Duis tincidunt, turpis id suscipit molestie, erat tortor tincidunt augue, eu venenatis erat neque nec nisi. Nunc malesuada bibendum elit eu bibendum.</div> <div class="label">My Text 2:</div> <div>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla suscipit arcu ut risus dapibus tincidunt et ut orci. Vestibulum vitae urna in ligula fringilla facilisis aliquet vel nisl. Quisque placerat risus eget arcu fermentum at consectetur arcu lobortis. In hac habitasse platea dictumst. In in libero non justo pellentesque cursus quis non nisi. Donec sit amet pharetra ipsum. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Nulla enim enim, fringilla vitae sodales id, ultrices non lacus. Etiam id augue ut dui convallis hendrerit. Vivamus urna justo, dignissim in suscipit eu, facilisis a libero. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. .</div> </form> </body> When this is rendered about half the text is displayed underneath the corresponding "label" class div. I would like all the text to be appear to the right of the "label" div.

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  • Using a regex pattern to find revision numbers from a svn merge

    - by zyzy
    svn diff -rXX:HEAD Will give me a format like this, if there has been a merge between those revisions: Merged /<branch>:rXXX,XXX-XXX or Merged /<branch>:rXXX I'm not very familiar with regex and am trying to put together a pattern which will match all the numbers (merged revision numbers) AFTER matching the "Merged /branch:r" part. So far I have this to match the first part: [Mm]erged.*[a-zA-Z]:r Thanks in adv. for the help :)

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  • sed multiline pygmentize

    - by dasickis
    I would like to take the html piece and pass it to pygmentize to colorize it accordingly. I'm wondering how I could use sed or some other cli tool to get that accomplished. I tried a bunch of sed one-liners and tried to use the following SO questions: Sed multiline replacement question Using or in multiline sed replacement sed or awk multiline replace I have the following log: 2012-03-26 18:04:27,385 9372 [main] ERROR web.commons.exception.ServiceInvocationException - Response from server cannot be decoded to JSON, responsePayload = <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"/> <title>Error 404 Not Found</title> </head> <body><h2>HTTP ERROR 404</h2> <p>Problem accessing jetty-url. Reason: <pre> Not Found</pre></p><hr /><i><small>Powered by Jetty://</small></i><br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> <br/> </body> </html> org.codehaus.jackson.JsonParseException: Unexpected character ('<' (code 60)): expected a valid value (number, String, array, object, 'true', 'false' or 'null') at [Source: java.io.StringReader@369133f6; line: 1, column: 2] UPDATE I'm adding this to a longer command: mvn -U test | (while read line; do echo ${line} | sed -e "s/.*ERROR.*/`echo -e '\e[91m&\e[0m'`/g" -e "s/.*\(WARN|INFO\).*/`echo -e '\e[93m&\e[0m'`/g"; done)

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  • jQuery UI problem: why do the elements go flying around the screen?

    - by George Edison
    Yes, I know the title sounds a little suspicious. I will try to explain this the best I can... The code below is supposed to have the blue div slide down beside the red div. The first time you hit the Show the div button, it works. Also, the Hide the div works. Then when I click to show the div again, it appears to the right of where it is supposed to be! Why is this?!? Note: You can find a live example of the code here <html> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Demo</title> <style type='text/css'> #red { background-color: red; width: 200px; height: 150px; position: absolute; } #blue { background-color: blue; width: 150px; height: 200px; position: absolute; display: none; } #tester_1 { top: 300px; left: 300px; position: absolute; } #tester_2 { top: 350px; left: 300px; position: absolute; } </style> </head> <script type="text/javascript" src="jquery.js"></script> <script type='text/javascript'> function Show() { $('#blue').position({ of: $('#red'), my: 'left top', at: 'right top'}).slideDown(); } function Hide() { $('#blue').hide(); } </script> <body> <div id='red'></div> <div id='blue'></div> <button id='tester_1' onclick='Show()'>Show the <kbd>div</kbd></button> <button id='tester_2' onclick='Hide()'>Hide the <kbd>div</kbd></button> </body> </html>

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  • Local Variables take 7x longer to access than global variables?

    - by ItzWarty
    I was trying to benchmark the gain/loss of "caching" math.floor, in hopes that I could make calls faster. Here was the test: <html> <head> <script> window.onload = function() { var startTime = new Date().getTime(); var k = 0; for(var i = 0; i < 1000000; i++) k += Math.floor(9.99); var mathFloorTime = new Date().getTime() - startTime; startTime = new Date().getTime(); window.mfloor = Math.floor; k = 0; for(var i = 0; i < 1000000; i++) k += window.mfloor(9.99); var globalFloorTime = new Date().getTime() - startTime; startTime = new Date().getTime(); var mfloor = Math.floor; k = 0; for(var i = 0; i < 1000000; i++) k += mfloor(9.99); var localFloorTime = new Date().getTime() - startTime; document.getElementById("MathResult").innerHTML = mathFloorTime; document.getElementById("globalResult").innerHTML = globalFloorTime; document.getElementById("localResult").innerHTML = localFloorTime; }; </script> </head> <body> Math.floor: <span id="MathResult"></span>ms <br /> var mathfloor: <span id="globalResult"></span>ms <br /> window.mathfloor: <span id="localResult"></span>ms <br /> </body> </html> My results from the test: [Chromium 5.0.308.0]: Math.floor: 49ms var mathfloor: 271ms window.mathfloor: 40ms [IE 8.0.6001.18702] Math.floor: 703ms var mathfloor: 9890ms [LOL!] window.mathfloor: 375ms [Firefox [Minefield] 3.7a4pre] Math.floor: 42ms var mathfloor: 2257ms window.mathfloor: 60ms [Safari 4.0.4[531.21.10] ] Math.floor: 92ms var mathfloor: 289ms window.mathfloor: 90ms [Opera 10.10 build 1893] Math.floor: 500ms var mathfloor: 843ms window.mathfloor: 360ms [Konqueror 4.3.90 [KDE 4.3.90 [KDE 4.4 RC1]]] Math.floor: 453ms var mathfloor: 563ms window.mathfloor: 312ms The variance is random, of course, but for the most part In all cases [this shows time taken]: [takes longer] mathfloor Math.floor window.mathfloor [is faster] Why is this? In my projects i've been using var mfloor = Math.floor, and according to my not-so-amazing benchmarks, my efforts to "optimize" actually slowed down the script by ALOT... Is there any other way to make my code more "efficient"...? I'm at the stage where i basically need to optimize, so no, this isn't "premature optimization"...

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