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  • Slow page unload in IE

    - by ForYourOwnGood
    I am developing a site which creates many table rows dynamically. The total amount of rows right now is 187. Everything works fine when creating the rows, but in IE when I leave the page, there is a large amount of lag. I do not know if this is some how related to the heavy DOM manipulation I am doing in the page? I do not create any function closures when building the dynamic content's event handlers so I do not believe this problem is related to memory leaks. Any insight is much appreciated.

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  • Ajax long polling (comet) + php on lighttpd v1.4.22 multiple instances problem.

    - by fibonacci
    Hi, I am new to this site, so I really hope I will provide all the necessary information regarding my question. I've been trying to create a "new message arrived notification" using long polling. Currently I am initiating the polling request by window.onLoad event of each page in my site. On the server side I have an infinite loop: while(1){ if(NewMessageArrived($current_user))break; sleep(10); } echo $newMessageCount; On the client side I have the following (simplified) ajax functions: poll_new_messages(){ xmlhttp=GetXmlHttpObject(); //... xmlhttp.onreadystatechange=got_new_message_count; //... xmlhttp.send(); } got_new_message_count(){ if (xmlhttp.readyState==4){ updateMessageCount(xmlhttp.responseText); //... poll_new_messages(); } } The problem is that with each page load, the above loop starts again. The result is multiple infinite loops for each user that eventually make my server hang. *The NewMessageArived() function queries MySQL DB for new unread messages. *At the beginning of the php script I run start_session() in order to obtain the $current_user value. I am currently the only user of this site so it is easy for me to debug this behavior by writing time() to a file inside this loop. What I see is that the file is being written more often than once in 10 seconds, but it starts only when I go from page to page. Please let me know if any additional information might help. Thank you.

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  • Escaping Problem

    - by James Jeffery
    How can escape quotes for use in HTML? My line of code is: <body onload="setTimeout('window.location='http://somepage.com'', 1000)"> As you can see in the current example, there are two ', and a " being used. How can I escape them for the above to work? The onload contents are set dynamically for a system I am working on @ work.

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  • jQuery gallery turn over with next and previous buttons

    - by Ralf
    Hi, i'm trying to do some kind of Gallery-Turn Over Script with jQuery. Therefor i got an array with - let's say 13 - images: galleryImages = new Array( 'images/tb_01.jpg', 'images/tb_02.jpg', 'images/tb_03.jpg', 'images/tb_04.jpg', 'images/tb_05.jpg', 'images/tb_06.jpg', 'images/tb_07.jpg', 'images/tb_08.jpg', 'images/tb_09.jpg', 'images/tb_10.jpg', 'images/tb_11.jpg', 'images/tb_12.jpg', 'images/tb_13.jpg' ); My gallery looks like a grid showing only 9 images at once. My current script already counts the number of li-elements in #gallery, loads the first 9 images and displays them. The HTML looks like this: <ul id="gallery"> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> <li></li> </ul> <ul id="gallery-controls"> <li id="gallery-prev"><a href="#">Previous</a></li> <li id="gallery-next"><a href="#">Next</a></li> </ul> I'm pretty new to jQuery an my problem is that i can't figure out how to split the array in portions with 9 elements to attach it as a link on the control buttons. I need something like this: $('#gallery-next').click(function(){ $('ul#gallery li').children().remove(); $('ul#gallery li').each(function(index,el){ var img = new Image(); $(img).load(function () { $(this).css('display','none'); $(el).append(this); $(this).fadeIn(); }).attr('src', galleryImages[index]); //index for the next 9 images?!?! }); }); Thanks for help!

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  • Using max-width = 100% and max-height = 100% on an image, calculate the display width/height

    - by NatalieMac
    I am creating a slideshow for images of various sizes to display centered vertically and horizontally within a canvas area. In my CSS, I set the width and height of the image to 100% so that each image would proportionally fill the canvas. I want the canvas to auto-size itself to fit within the viewer's screensize as the original size of the images is quite large (up to 800 pixels tall). I am using jQuery 1.4, and using the height of the image to calculate the top value for absolute positioning it to the middle of the canvas. I have tried using jQuery to get the .height(), innerHeight(), and outerHeight(), but it always gets the full size of the image. I extracted the DOM element from the jQuery object and tried using .width, .offsetWidth, and .clientWidth, but that too always seems to return the full size of the image. Firebug displays the correct dimensions, so I know there's some way of calculating the actual display height of the image, I just can't figure out what it is. How do you get the actual display height of an image if you've set max-height = 100%? I didn't want to have to calculate and set the height of each image in the js, but if I have to, I will. It just seems like I should be able to set the canvas size and have the images auto-adjust.

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  • Popup window keeps opening after I close it and refresh the page?

    - by Xaisoft
    I have an aspx.cs page with the following code: hypPopup.Attributes.Add("onclick", "window.open('Popup.aspx', '', 'height=650, width=800, location=no, toolbar=no, status=no, scrollbars=yes, resizable=yes'); return false" ); When I click the hypPopup link, the window pops up which is fine, but if I close it and refresh the page, the popup keeps popping up. I have to leave the page and come back for it to stop popping up on every refresh. Is this behavior by default or is there a fix to it? hypPopup.Attributes.Add is done in the Page_Load

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  • Register javascript array from code behind in facebook

    - by Ahmy
    I need to set a javascript array from code behind using C# in Asp.Net2008 the problem now is that when i register the array using the following C# code: string ArrVal = ""; string Sep = ""; for (int i = 0; i < 17; i++) { ArrVal += Sep + FilesCount[i].ToString(); Sep = ","; } Page.ClientScript.RegisterArrayDeclaration("FilesArr", ArrVal); And the Client code is : var FileName = FilesArr[0]; in any web application it is working well but at my application that is released in the facebook platform the javascript code doesn't see the array but in ordinary web application the javscript code see the registered array can any one tell me why this problem occurrs ? Thanks in advance for any reply and trial.

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  • Set focus to textbox

    - by Geetha
    Hi All, In my web page there is a textbox with width and height equal to 0. This textbox is used to get the scanned bar code value which should not be visible to the user. Needs: I want to set focus to the textbox, when i click anywhere in the form. I want to make the cursor invisible. Geetha.

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  • Interesting interview question. .Net

    - by rahul
    Coding Problem NumTrans There is an integer K. You are allowed to add to K any of its divisors not equal to 1and K. The same operation can be applied to the resulting number and so on. Notice that starting from the number 4, we can reach any composite number by applying several such operations. For example, the number 24 can be reached starting from 4 using 5 operations: 468121824 You will solve a more general problem. Given integers n and m, return the minimal number of the described operations necessary to transform n into m. Return -1 if m can't be obtained from n. Definition Method signature: int GetLeastCount (int n, int m) Constraints N will be between 4 and 100000, inclusive. M will be between N and 100000, inclusive. Examples 1) 4 576 Returns: 14 The shortest order of operations is: 468121827365481108162243324432576 2) 8748 83462 Returns: 10 The shortest order of operations is: 874813122196832624439366590497873283106834488346083462 3) 4 99991 Returns: -1 The number 99991 can't be obtained because it’s prime!

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  • How to make Web Storage persistent in Cordova using JS?

    - by ett
    I have a small quiz app, which is a cross-platform mobile app, that I plan for it to run on Android, iOS, and WP8. I want to store a local highscore, where it will keep track how many points the user had, and if he/she does better than the already stored highscore, update the current highscore. Though, I want the highscore to be persistent, what I mean is, every time the user opens the app I want the last highscore to be present and it to be compared with the new quiz score. Meaning, I don't want the highscore to be deleted after each time the app is closed. I also want for the first time when the app is ran, the highscore to be set to 0, so obviously the first time the user finishes the quiz gets a new highscore. I have those codes so far: scoredb.js // Wait for device API libraries to load document.addEventListener("deviceready", initScoreDB, false); // Device APIs are available function initScoreDB() { window.localStorage.setItem("score", 0); highscore = window.localStorage.getItem("score"); } main.js var correct = 0; var highscore; // In between I have some code that keeps incrementing // correct variable for each correct answer. if (correct > highscore) { window.localStorage.setItem("score", correct); highscore = correct; } It does seem to work okay once the app is started. I did the quiz three times, in the simulator, and it keeps the score as it should. Though, each time I open the app, highscore is reseted to 0. I guess it is due to the fact that I call initScoreDB when the device is ready, and I initialize the score to 0 there and give that value to highscore. Can someone help me to initialize the score to 0 only when the app is ran for the first time, and all the other times to keep the latest highscore as the current highscore and compare it each time with the score that is achieved when the quiz is finished. If someone can help me, I would be glad.

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  • Take contentd from url and place in container on page

    - by Jackson
    Hi There, I would like to use jQuery to find the last page name / directory from the url and display it on the page in a <h3> container. For example: /_blog/PunkLogic_News/tag/videos/ I would like to display 'videos' in a specific <h3 class="urltag"> on the page. /_blog/PunkLogic_News/tag/Noosa_Biosphere/ I would like to display 'Noosa Biosphere' without the underscore. I suppose all special characters would need to be removed as well. Thanks in advance for your help. Jackson

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  • Highstock Chrome/Firefox/Opera

    - by Matthias
    Is there any particular reason that this HighStock chart: var chart; $(function() { chart = new Highcharts.StockChart({ chart: { renderTo: 'container' }, title: { text: 'Total balance over time' }, xAxis: { type: 'datetime', maxZoom: 7 * 24 * 3600000, // one week title: { text: null } }, yAxis: { title: { text: 'Balance' }, startOnTick: false, showFirstLabel: false }, tooltip: { shared: true }, series: [{ type: 'area', name: 'Account balance', pointInterval: 14 * 3600 * 1000, pointStart: Date.UTC(2012, 3, 11), data: [ 0.7809, 0.7827, 0.7848, 0.785, 0.7873, 0.7894, 0.7907, 0.7909, 0.7947, 0.7987, 0.799, 0.7927, 0.79, 0.7878, 0.7878, 0.7907, 0.7922, 0.7937, 0.786, 0.787, 0.7838, 0.7838, 0.7837, 0.7836, 0.7806, 0.7825, 0.7798, 0.777, 0.777, 0.7772, 0.7793, 0.7788, 0.7785, 0.7832, 0.7865, 0.7865, 0.7853, 0.7847, 0.7809, 0.778, 0.7799, 0.78, 0.7801, 0.7765, 0.7785, 0.7811, 0.782, 0.7835, 0.7845, 0.7844, 0.782, 0.7811, 0.7795, 0.7794, 0.7806, 0.7794, 0.7794, 0.7778, 0.7793, 0.7808, 0.7824, 0.787, 0.7894, 0.7893, 0.7882, 0.7871, 0.7882, 0.7871, 0.7878, 0.79, 0.7901, 0.7898, 0.7879, 0.7886, 0.7858, 0.7814, 0.7825, 0.7826, 0.7826, 0.786, 0.7878, 0.7868, 0.7883, 0.7893, 0.7892, 0.7876, 0.785, 0.787, 0.7873, 0.7901, 0.7936, 0.7939, 0.7938, 0.7956, 0.7975, 0.7978, 0.7972, 0.7995, 0.7995 ] }] }); }); is rendered without any problems in Opera, but not working in Chrome or Firefox? I'm also using some HighChart pie charts. Those are rendered without any issues on all browsers. All of the demos on the HighStock Demo Gallery are working without problems.

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  • how do I assign a variable to a returned response in jQuery

    - by netrox
    I wanted to assign a returned value (just text) to a variable in jQuery. I wrote this: var hm=22; $.ajax({ type: "GET", url: "ajax_check_match.php", dataType: "text", success:callback }); function callback(data, status) { // assign ajaxed value to cm variable cm=data; if (hm != cm) { dosomething(); } } But it fails every time. Why is that the cm variable keeps getting undefined when it sends request. I set the php file to return 1 and it still says undefined. I opened ajax_check_match.php in browser and I see "1". I didn't see the point of using XML or JSON since a simple number would suffice. Or do I have to use XML/JSON?

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  • Provide local fallback for CSS from CDN

    - by BadHorsie
    I'm loading the Bootstrap CSS on my page from the CDN bootstrapcdn.com <link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css" rel="stylesheet"> How can I test if the stylesheet was loaded, and if not provide a local fallback? I do not want to wait for jQuery or other libraries to load before doing the test; I want all CSS to be loaded on the page first.

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  • div in an iframe

    - by Hulk
    In an iframe how to make a div to hide and on mouse over the bottom of the page bring it to front again. This is just like a control that appears in medial players,hide when mouse out and show when mouse over <div> <img src="play.gif"/> <img src="next.gif"/> <img src="last.gif"/> <img src="first.gif"/> <img src="previous.gif"/> <img src="next.gif"/> </div> Thanks..

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  • How to condense onclick code to be dynamic

    - by opbeta
    I am trying to get this onclick function code to be dynamic. I do not want to have 50 blocks of code for all the states. He is a quick snippet of the code var Ohio=function(){ document.getElementById('texas').style.display='none'; document.getElementById('florida').style.display='none'; document.getElementById('ohio').style.display='block'; } and so on and so forth..... How would I go about condensing this to make it smaller and dynamic?

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  • jquery ajax encoding problem!

    - by teMkaa
    hi, i send ajax requests with jquery, and i have a function: $('input').ajaxSuccess(function(e, xhr, settings) { console.log(xhr.responseText); }); Ajax response ara russian letters in utf-8, all server (apache, php) and files are in utf-8 but response text is something like this: \u0421\u043b\u0438\u0448\u043a\u043e\u043c \u043c\u0430\u043b\u043e \u0431\u0443\u043a\u0432! how could i decode this characters to normal words? Thanks for help!

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  • "Access is denied" error on accessing iframe document object

    - by Ovesh
    For posting AJAX forms in a form with many parameters, I am using a solution of creating an iframe, posting the form to it by POST, and then accessing the iframe's content. specifically, I am accessing the content like this: $("some_iframe_id").get(0).contentWindow.document I tested it and it worked. On some of the pages, I started getting an "Access is denied" error. As far as I know, this shouldn't happen if the iframe is served from the same domain. I'm pretty sure it was working before. Anybody have a clue? If I'm not being clear enough: I'm posting to the same domain. So this is not a cross-domain request. I am testing on IE only. P.S. I can't use simple ajax POST queries (don't ask...)

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  • Controller with unknown number of parameters?

    - by StackPointer
    Greetings! I'm doing a Form on ASP.NET MVC 2, in my view I have a TextBox for the name, and two buttons. One of the buttons is for submit, and the other one have a function in JS, that add's another textbox, and a drop down list. In the post controller action method, how do I get all the parameters? Here is the View Code: <body> <div> <%using (Html.BeginForm()) { %> New Insurance Type Name: <%=Html.TextBox("InsuranceName") %> <div id="InsuranceDetails"/> </div> <div id="Buttons"> <input type="button" onclick="AddFieldForm()" value="Add Field" /> <p /> <input type="submit" value="Submit" /> <%} %> </div> </body>

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  • Get status of servlet request before the response is returned

    - by Alex
    Good evening, I am in the process of writing a Java Servlet (Struts 2, Tomcat, JSP etc) which is capable of doing some fairly complex simulations. These can take up to 2 minutes to complete on the and will return a graph of the results. It is trivial to calculate the percentage of the simulation completed because the process works by repeating the same calculations 1000s of times. I would be interested to know if anyone has ever tried to use client side technology to provide any estimate of the percentage complete. I.e query the servlet processing to get the number of cycles completed at various point throughout the simulation. This could then be displayed as a bar in the client browser. Any thoughts, advice, resources would be much appreciated. Thanks, Alex

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