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  • jQuery: Trouble inserting DOM elements

    - by Rosarch
    I want to add a set of lists to the children of another DOM element: var req_subsets = $("#req_subsets"); $.each(subsets, function(index, subset) { var subset_list = $("<ul></ul>"); // add DOM elements to subset_list req_subsets.append(subset_list); }); However, only one DOM element is ever added. This makes me suspect that when I assign a new value to subset_list, the old one is overwritten. If that is the problem, how do I avoid it? If not, what else am I doing wrong? UPDATE: I changed something else, and I'm almost entirely certain that this is fixed.

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  • Is it possible to create thread-safe collections without locks?

    - by Andrey
    This is pure just for interest question, any sort of questions are welcome. So is it possible to create thread-safe collections without any locks? By locks I mean any thread synchronization mechanisms, including Mutex, Semaphore, and even Interlocked, all of them. Is it possible at user level, without calling system functions? Ok, may be implementation is not effective, i am interested in theoretical possibility. If not what is the minimum means to do it? EDIT: Why immutable collections don't work. This of class Stack with methods Add that returns another Stack. Now here is program: Stack stack = new ...; ThreadedMethod() { loop { //Do the loop stack = stack.Add(element); } } this expression stack = stack.Add(element) is not atomic, and you can overwrite new stack from other thread. Thanks, Andrey

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  • Catch Multiple Custom Exceptions? - C++

    - by Alex
    Hi all, I'm a student in my first C++ programming class, and I'm working on a project where we have to create multiple custom exception classes, and then in one of our event handlers, use a try/catch block to handle them appropriately. My question is: How do I catch my multiple custom exceptions in my try/catch block? GetMessage() is a custom method in my exception classes that returns the exception explanation as a std::string. Below I've included all the relevant code from my project. Thanks for your help! try/catch block // This is in one of my event handlers, newEnd is a wxTextCtrl try { first.ValidateData(); newEndT = first.ComputeEndTime(); *newEnd << newEndT; } catch (// don't know what do to here) { wxMessageBox(_(e.GetMessage()), _("Something Went Wrong!"), wxOK | wxICON_INFORMATION, this);; } ValidateData() Method void Time::ValidateData() { int startHours, startMins, endHours, endMins; startHours = startTime / MINUTES_TO_HOURS; startMins = startTime % MINUTES_TO_HOURS; endHours = endTime / MINUTES_TO_HOURS; endMins = endTime % MINUTES_TO_HOURS; if (!(startHours <= HOURS_MAX && startHours >= HOURS_MIN)) throw new HourOutOfRangeException("Beginning Time Hour Out of Range!"); if (!(endHours <= HOURS_MAX && endHours >= HOURS_MIN)) throw new HourOutOfRangeException("Ending Time Hour Out of Range!"); if (!(startMins <= MINUTE_MAX && startMins >= MINUTE_MIN)) throw new MinuteOutOfRangeException("Starting Time Minute Out of Range!"); if (!(endMins <= MINUTE_MAX && endMins >= MINUTE_MIN)) throw new MinuteOutOfRangeException("Ending Time Minute Out of Range!"); if(!(timeDifference <= P_MAX && timeDifference >= P_MIN)) throw new PercentageOutOfRangeException("Percentage Change Out of Range!"); if (!(startTime < endTime)) throw new StartEndException("Start Time Cannot Be Less Than End Time!"); } Just one of my custom exception classes, the others have the same structure as this one class HourOutOfRangeException { public: // param constructor // initializes message to passed paramater // preconditions - param will be a string // postconditions - message will be initialized // params a string // no return type HourOutOfRangeException(string pMessage) : message(pMessage) {} // GetMessage is getter for var message // params none // preconditions - none // postconditions - none // returns string string GetMessage() { return message; } // destructor ~HourOutOfRangeException() {} private: string message; };

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  • how can I override an anonymous javascript function attached to an eventlistener?

    - by Sid
    I found that a website does somewhat sneaky things. When you hover over a link, it shows you the real URL. WHen you click on it, it uses the click/mousedown event to rewrite the URL. I want to override that behaviour in firefox, So I fired up firebug to see what it does. On a mouse click, it executes a function called window.tgs. Easy, I thought. I can override this function. My first attempt was to do get the element via getELementsByTagName(), and then element.removeEventListener("click",window.tgs, false); To my surprise, this did nothing. I tried redefining window.tgs window.tgs = function() { return true; }; that did not do anything either. I am not a JS expert. Your insights appreciated thanks Sid

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  • How do i return a StringWriter When I cant Clone it?

    - by acidzombie24
    My code looks like the below. Obviously i cant write 'ok' because the object has been disposed. I cant do return sw.Clone() bc clone doesnt exist. If i dont use a using then at any point between = new and return (like iterating and writing to the object as my example doesnt do) can have an exception and thus not disposing the object. Am i to define sw outside of a try block and check if its null then dispose in a catch block? That seems like a bit of excessive work. Is there a better way? is that the only way? static void func1() { using (var sw = func2()) { sw.WriteLine("Ok"); } } static StringWriter func2() { using (var sw = new StringWriter()) { return sw; } }

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  • What is the correct method to load an XML file and re-write it as a CSV?

    - by codesmack
    I have a XML file that I want to load into an unknown object type. (I say unknown object type because I am not sure what direction to go) Once I have the data loaded I need to do some processing on certain elements that are now loaded into the new object. For sake of example, we can say that the xml file is full of elements named <car> and within the car element I need to process the <mileage> element. Then once this is all done I need to write the file as a CSV file. I would like to do this is the most direct way possible. (The less code the better) I am using VS 2008 C#

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  • Help! How to get the event handler with IE Dom interfaces?

    - by usfree74
    Hey Gurus, I am working to use IE Dom interface to automate IE page access. I am trying to get all event handlers defined in a page. I am using IHTMLElement object now for this purpose. If the html page defines "onclick=xxx", element.onclick returns the click handler. However, if an event handler is defined in javascript, element.onclick simply returns NULL. What's the right way to get the event handler then? Thanks, xin Below is an example that uses javascript to define event handler. $(document).ready(function(){ $("a").click(function(event){ $(this).hide("slow"); alert("Thanks for visiting!"); window.location="http://cnn.com"; }); }); jQuery

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  • Create Menu with css and li elements compatible for all browsers.

    - by Cesar Lopez
    Hi all, I am trying to create a simple menu using li elements, but it only works on IE7, in FF and Chrome, the alignment get weird. Also the :hover and :Active only works on IE7. Could anybody give me a hit on this? I would really appreciate it. CSS: #heading{ width: 700px; height:auto; margin: 0 auto; background-color:#FFFFFF; margin-top:5px; margin-bottom:5px; display:block; } #imglogo{ float:left; } #barDescription{ float:right; } #navigation{ text-align: right; margin-top: 70px; } #navigation li{ float: right; display: block; text-align: center; list-style-type: none; } #navigation li a{ color:#A08019; background-image: url('Images/Menu1.png'); background-repeat:repeat-x; background-position: center center; text-decoration:none; font-weight:bold; display: block; height:25px; vertical-align:middle; padding-right:10px; padding-left:10px; } HTML: <div id="heading" > <div id="imglogo"> <img id="logo" src="Images/logo.png" alt="logo" /> </div> <div id="barDescription"> <h4>Especialidad en tapas,vinos y menus</h4> <h5>Restaurante de cocina creativa tradicional. Vinos y tapas</h5> </div> <ul id="navigation"> <li><a href="#">Contacto</a></li> <li><a href="#">Ubicacion</a></li> <li><a href="#">Reservas</a></li> <li><a href="#">Menus</a></li> <li><a href="#">Local</a></li> </ul> </div>

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  • How to force HtmlUnit to save page?

    - by booroondook
    Hello. I'm using HtmlUnit to click on a HtmlElement that triggers Javascript action: currentPage = ((HtmlElement) currentPage.getByXPath("//*[contains(@onclick, 'check();')]").get(0)).click(); The element is: <a href="#" onclick="check(); return false;"> The page returned is quite similar to the page, containing that element: same URL, mostly same HTML, but there are some minor differences in the HTML and HtmlUnit doesn't save the new page. I'm using HttpAnalyzer to sniff the traffic and I see that the Webclient correctly handles JS and send the right request. The response is also correct, but when I dump the contents of the currentPage to a file, I see that the actual page didn't change. How can I fix it?

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  • Why do Pascal control structures appear to be inconsistent?

    - by 70Mike
    Most Pascal control structures make sense to me, like: for ... do {statement}; if (condition) then {statement}; while (condition) do {statement}; where the {statement} is either a single statement, or a begin ... end block. I have a problem with: repeat {statement-list} until (expression); try {statement-list} except {statement-list} end; Wouldn't it be better that repeat and try have the same general structure, accepting only a single statement or a begin ... end block, instead of having a statement-list that's not formally blocked with a begin and an end?

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  • using php to check if xml is atom or rss

    - by guest86
    i'm writing a php code which has to determine if given xml is in "atom" or "rss" format. After observing atom and rss xml files, i decided classify xml based on a root element. If root element is "<feed" it's an atom xml. If it's "<rss" it's not an atom. How can i perform that check using DOM? So far i have: $dom->loadXML($resp); $feed = $dom->getElementsByTagName("feed"); but it's not working quite right....

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  • PHP DOMElement::getElementsByTagName - Anyway to get just the immediate matching children?

    - by rr
    Hi All, is there a way to retrieve only the immediate children found by a call to DOMElement::getElementsByTagName? For example, I have an XML document that has a category element. That category element has sub category elements (which have the same structure), like: <category> <id>1</id> <name>Top Level Category Name</name> <subCategory> <id>2</id> <name>Sub Category Name</name> </subCategory> ... </category> If I have a DOMElement representing the top level category, $topLevelCategoryElement->getElementsByTagName('id'); will return a list with the nodes for all 'id' elements, where I want just the one from the top level. Any way to do this outside of using XPath?

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  • Animating inline elements with JQuery

    - by rnielsen
    I am trying to show and hide an inline element (eg a span) using jquery. If I just use toggle(), it works as expected but if I use toggle("slow") to give it an animation, it turns the span into a block element and therefore inserts breaks. Is animation possible with inline elements? I would prefer a smooth sliding if possible, rather than a fade in. Thanks. <script type="text/javascript"> $(function(){ $('.toggle').click(function() { $('.hide').toggle("slow") }); }); </script> <p>Hello <span class="hide">there</span> jquery</p> <button class="toggle">Toggle</button>

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  • php compare array keys, not values

    - by user271619
    I am successfully using the array_key_exists(), as described by php.net Example: <?php $search_array = array('first' => 1, 'second' => 4); if (array_key_exists('first', $search_array)) { echo "The 'first' element is in the array"; } ?> But, take out the values, and it doesn't work. <?php $search_array = array('first', 'second'); if (array_key_exists('first', $search_array)) { echo "The 'first' element is in the array"; } ?> Not sure how to only compare 2 arrays by their keys only.

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  • How can I check if Zend_Form_Elements has no decorators set

    - by jiewmeng
    I find that even if I just declare an element like $this->addElement('textarea', 'txt1'); I find that it already has decorators set Zend_Debug::dump($this->getElement('txt1')->getDecorators()); http://pastebin.com/7Y24g62w I want to test that I didn't set decorators using setDecorators() or using something like $this->addElement('textarea', 'txt1', array( 'decorators' => array(...) )); If I didn't set any decorators then apply default decorators, how can I do that. I want to apply default decorators per element basis, not using Zend_Form#setDisableLoadDefaultDecoraotrs()

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  • jQuery getting text-shadow variabile

    - by Mircea
    Hi, I want to get 4 variables when I click on a span that have the CSS3 text-shadow propriety. So for a css propriety of text-shadow: -4px 11px 8px rgb(30, 43, 2);, my code should be: $("#element").click(function () { var text-shadow = $("#element").css("text-shadow") }); Would it be possible to get it split like: var y = "-4px"; var x = "11px"; var blur = "8px"; color = "rgb(30, 43, 2)"; I need to somehow split the first variable to get this data. Thanx

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  • jQuery sortable drop within itself.

    - by Janis Peisenieks
    So my question here is: Can I place a sortable element within another sortable element of the same level. Example: <ul class="sortable"> <li class="subsortable">Some text</li> <li class="subsortable">Some text</li> </ul> into: <ul class="sortable"> <li class="subsortable">Some text<li class="subsortable">Some text</li></li> </ul> I've been trying to do this for a day now, and I can't seem to find a way to do this.

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  • should jQuery data be chainable?

    - by pedalpete
    I'm trying to add multiple jQuery data entries to a single element. I suspected that the following would work jQuery('td.person#a'+personId).data('email',thisPerson.email).data('phone',thisPerson.phone); However, I am getting nothing but errors when I do this. jQuery('td.person#a'+personId).data('email',thisPerson.email); jQuery('td.person#a'+personId).data('phone',thisPerson.phone); is there another way to get more than one data entry on an element? Hopefully chained?

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  • JavaScript in multiple files

    - by vijay.shad
    Hi, I Have created two JavaScript files.One file is "validators.js" and other is "UserValidations.js". Here is the code for validators.js function isBlankString(value) { if (value.replace(/\s/g, "") == "") { return true; } else { return false; } } In other js file I have defined function for validating user name like this. function validateUsername(element) { var username = element.value; if(value.replace(/\s/g, "") == ""){ //nothing to validate return; }else{ //validation logic } } Now as it is obvious i should have used isBlankString(value) method to check string length. But I am clue less about how can i use the function defined in other file?

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  • Class variable defined at @implementation rather than @interface?

    - by bitcruncher
    Hello. I'm new to Objective-C, but I am curious about something that I haven't really seen addressed anywhere else. Could anyone tell me what is the difference between a private variable that is declared at the @interface block versus a variable that is declared within the @implementation block outside of the class methods, i.e: @interface Someclass : NSObject { NSString *forExample; } @end vs. @implementation Someclass NSString *anotherExample; -(void)methodsAndSuch {} @end It seems both variables ( forExample, anotherExample ) are equally accessible throughout the class and I can't really find a difference in their behaviour. Is the second form also called an instance variable?

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  • Properly removing an Integer from a List<Integer>

    - by Yuval A
    Here's a nice pitfall I just encountered. Consider a list of integers: List<Integer> list = new ArrayList<Integer>(); list.add(5); list.add(6); list.add(7); list.add(1); Any educated guess on what happens when you execute list.remove(1)? What about list.remove(new Integer(1))? This can cause some nasty bugs. What is the proper way to differentiate between remove(int index), which removes an element from given index and remove(Object o), which removes an element by reference, when dealing with lists of integers? The main point to consider here is the one @Nikita mentioned - exact parameter matching takes precedence over auto-boxing.

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  • HTML5 <audio> Safari live broadcast vs not

    - by Peter Parente
    I'm attempting to embed an HTML5 audio element pointing to MP3 or OGG data served by a PHP file . When I view the page in Safari, the controls appear, but the UI says "Live Broadcast." When I click play, the audio starts as expected. Once it ends, however, I can't start it playing again by clicking play. Even using the JS API on the audio element and setting currentTime to 0 fails with an index error exception. I suspected the headers from the PHP script were the problem, particularly missing a content length. But that's not the case. The response headers include a proper Content- Length to indicate the audio has finite size. Furthermore, everything works as expected in Firefox 3.5+. I can click play on the audio element multiple times to hear the sound replay. If I remove the PHP script from the equation and serve up a static copy of the MP3 file, everything works fine in Safari. Does this mean Safari is treating audio src URLs with query parameters differently than URLs that don't have them? Anyone have any luck getting this to work? My simple example page is: <!DOCTYPE html> <html> <head></head> <body> <audio controls autobuffer> <source src="say.php?text=this%20is%20a%20test&format=.ogg" /> <source src="say.php?text=this%20is%20a%20test&format=.mp3" /> </audio> </body> </html> HTTP Headers from PHP script: HTTP/1.x 200 OK Date: Sun, 03 Jan 2010 15:39:34 GMT Server: Apache X-Powered-By: PHP/5.2.10 Content-Length: 8993 Keep-Alive: timeout=2, max=98 Connection: Keep-Alive Content-Type: audio/mpeg HTTP Headers from direct file access: HTTP/1.x 200 OK Date: Sun, 03 Jan 2010 20:06:59 GMT Server: Apache Last-Modified: Sun, 03 Jan 2010 03:20:02 GMT Etag: "a404b-c3f-47c3a14937c80" Accept-Ranges: bytes Content-Length: 8993 Keep-Alive: timeout=2, max=100 Connection: Keep-Alive Content-Type: audio/mpeg I tried hard-coding the Accept-Ranges header into the script too, but no luck.

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  • jquery masonry on ul with nested ul

    - by Adam Wright
    I'm trying to create a footer nav of a sitemap with levels nested within each other. i want to use masonry so the padding and margin is consistant and not changed depending on nested items. its firing masonry but its adding the relative style to the nested ul if i change the masonry call to select just the first() ul then nested li appear on one line. any ideas? <div id="links"> <ul ><li class="box"><a href="/Industries.aspx" >Industries</a></li><li class="box"><a href="/Services.aspx" >Services</a></li><li class="box"><a href="/Quality---Regulatory.aspx" >Quality &amp; Regulatory</a></li><li class="box"><a href="/About.aspx" >About</a><ul ><li class="box"><a href="/About/Our-Story.aspx" >Our Story</a></li><li class="box"><a href="/About/Our-Mission.aspx" >Our Mission</a></li><li class="box"><a href="/About/Our-Core-Values.aspx" >Our Core Values</a></li></ul></li><li class="box"><a href="/News.aspx" >News</a><ul ><li class="box"><a href="/News/Events.aspx" >Events</a></li></ul></li><li class="box"><a href="/Careers.aspx" >Careers</a></li><li class="box"><a href="/Contact.aspx" >Contact</a></li><li class="box"><a href="/tests.aspx" >tests</a></li></ul> </div> <script type="text/javascript"> $('#links ul').masonry({ singleMode: true, // Disables measuring the width of each floated element. // Set to true if floated elements have the same width. // default: false columnWidth: 182, // Width in pixels of 1 column of your grid. // default: outer width of the first floated element. itemSelector: '.box:visible', // Additional selector to specify which elements inside // the wrapping element will be rearranged. // Required for Infinite Scroll with window resizing. resizeable: true, // Binds a Masonry call to window resizes // so layout appears fluid. // default: true animate: false, // Animates layout rearrangements. // default: false saveOptions: true // Masonry will use the options from previous Masonry // calls by default, so you only have to enter in options once // default: true }); </script>

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  • Cant set drop down list selected value in page load

    - by Ben
    Hi, I'm trying to set the selected value of a ddl during page load ie. before databind. This causes "selected value does not exist" errors. So I force a databind, and add a new element if it does not exist in the data source. However it looks like when the databind is performed later in the page lifecycle that my added element(s) are removed/overwritten. Am I setting the values in the wrong part of the life cycle? what I'm doing seems rather hackish and I think im going about this the wrong way... is there a better way to do this?

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