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  • Retrieving an element by array index in jQuery vs the each() function.

    - by Alex Ciminian
    I was writing a "pluginable" function when I noticed the following behavior (tested in FF 3.5.9 with Firebug 1.5.3). $.fn.computerMove = function () { var board = $(this); var emptySquares = board.find('div.clickable'); var randPosition = Math.floor(Math.random() * emptySquares.length); emptySquares.each(function (index) { if (index === randPosition) { // logs a jQuery object console.log($(this)); } }); target = emptySquares[randPosition]; // logs a non-jQuery object console.log(target); // throws error: attr() not a function for target board.placeMark({'position' : target.attr('id')}); } I noticed the problem when the script threw an error at target.attr('id') (attr not a function). When I checked the log, I noticed that the output (in Firebug) for target was: <div style="width: 97px; height: 97px;" class="square clickable" id="8"></div> If I output $(target), or $(this) from the each() function, I get a nice jQuery object: [ div#8.square ] Now here comes my question: why does this happen, considering that find() seems to return an array of jQuery objects? Why do I have to do $() to target all over again? [div#0.square, div#1.square, div#2.square, div#3.square, div#4.square, div#5.square, div#6.square, div#7.square, div#8.square] Just a curiosity :).

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  • Changing careers to Software Engineering.... Wise?

    - by Phil
    Hello everyone, I notice this site has a wealth of software professionals and I am investigating a career change to Software Engineering: *Particularly, I would like to know how likely one would be able to work from home or another country over the internet. Is this something that can be done and what does it usually entail? (time?,experience?, specific companies?, etc) *Currently, I am a teacher but always had a passion for tech. I am interested in a MS - Software Engineering program designed for individuals based from another field. Is this a wise degree to obtain? Would I be just wasting my time and money obtaining this degree? (I'm suspicious about this program and the feasibility of obtaining employment without a healthy CS background) Thanks for any assistance you can provide!

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  • Returning an array from an activity

    - by Boardy
    I am currently working on an android project and I want to be able to startActivityForResult so that I can return an array of. The array is an ArrayList<Spanned> lets say its called myArray. From what I've read I can't return an array directly from the activty using the set result so I was thinking that once the array has added all the data to the array, I can then call the toString function on it, i.e. myArray.toString(). If I do this, I have no idea how I can then convert this back into the original ArrayList<Spanned>. Thanks for any help you can provide.

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  • JButtons don't imediatly change on mouse event

    - by out_sider
    I'm using the java swing library to develop a board game called DAO. The problem is that after the human player makes its move, by clicking on the JButton with the piece image that he wants to play, I call the computer AI routine but inside the mouse event function. By doing this only when the function returns, the computer ends its turn, do the JButtons refresh their Images (setIcon comes in). I'd like to know how can I force the JButtons to change their image at the moment they are clicked and not only when the mouse event function ends (as I need to handle data inside it). I've tried all of this myButtons[i][j].setIcon(xIcon); myButtons[i][j].revalidate(); myButtons[i][j].repaint(); myButtons[i][j].validate(); None worked. Thx in advance

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  • Activity.findViewById returning null sporadically

    - by adstro
    From the crash logs that I am getting from the Android market, I can see that some of my users are getting Force Closes caused by NullPointerExceptions when my code tries to access views that are in my application. In one example, my activity makes a call to findViewById() in onCreate() after I call setContentView(). I get an NPE when I try to access the view after the call to findViewById() (still in onCreate). What has me really scratching my head is that this does not happen all of the time (in fact most of the time the code acts as I would expect), but enough to have me concerned. I could add code to always check for null and avoid the NPE, but I would like to understand what could be causing the sporadic behavior. Does anyone know what could be causing this?

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  • When to give in and start The Big Rewrite?

    - by John Cromartie
    I've had my share of projects where the first thing I think is "let's just rewrite it in ." Everybody feels the urge at some point. In fact, I think I've had the urge to rewrite pretty much every project I've ever been on. However, it is accepted wisdom that a total rewrite is generally a bad idea. The question is: when do you look at a project and say: "OK, it's time to start over." What sort of metrics or examples can you cite of where a rewrite was truly necessary? How bad does the code have to be? How old can a project get before there too much invested?

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  • XNA: What is the point of Unload()?

    - by Rosarch
    XNA games have an Unload() method, where content is supposed to be unloaded. But what is the point of this? If all the content is being unloaded, then the game must be exiting, in which case everything would be garbage collected anyway, right?

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  • Extend footer wrap to width of page.

    - by hawkeye126
    I've made a footer wrap outside the content wrap (which everything else is in). I would like to make the footer wrap extend to fill the width of the page and I would like it to be fixed on the bottom. Here's the code: footerWrap { background-color:#000; width: auto; } footer { margin: auto; text-align:center; width:965px; height:150px; background-color:#000; border:#000 inset medium; } The website is item9andthemadhatters.com please let me know if you need any other code or info. Thanks!! update: html { padding:0; height:100%; width: 100%; } body{ margin: -1px 0 0 0; background-color:#FFF; font-family: calibri; background-image:url(images/item9HeaderSideFiller.gif); background-repeat: repeat-x; padding:0; height:100%; width: 100%; } wrap { width: 965px; margin:auto auto; min-height:462px; max-height:4000 px; footerWrap { background-color:#000; position:absolute; bottom:0; width:100% } footer { margin: auto; text-align:center; width:965px; height:150px; background-color:#000; } }

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  • How to count time securely in a Flash game?

    - by user352353
    Hello. I'm developing a Flash game in ActionScript 2, and the issue if that this game has to count the time securely. It can't count the time from the Date class because the Flash Player takes the time from the local computer, and the user can change the local time so the time reported would be fake. I haven't considerend to take the time from the server because there's a 3WH (3 way handshake) time and it would not be practical. What do you sugest me??

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  • How to enable ListView overscroll in HTC One X (may be all htc devices)?

    - by smeghead
    I have a listview in my app, and in my Xoom, and Galaxy S2, you get the normal glow effect when you overscroll. But in HTC One X, it doesn't show any overscroll behaviour. All the HTC apps have an accordion style overscroll behaviour. Do they use some custom listview? In any case, how do I show some sort of overscroll effect in HTC phones? Also, is there some ListView class out there, that implements overscroll effects on all phones (doesn't have to be the same effect). Some Context: The phones are on Android 4.0.3, and Xoom is on 4.0.4. The app is using the Holo Light theme. The min/target API level (as well as the Project API level) is set to 15.

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  • Implement a top level window from a broadcast receiver

    - by kwatts
    I have a broadcast receiver that listens for incoming calls, then displays a popup. The popup is a dialog type of theme and has FLAG_NOT_FOCUSABLE and FLAG_NOT_TOUCHABLE - basically, it's an informational window that goes away after x seconds, and is not meant to interfere or take focus over anything else. The issue is that the incoming call intent, built into android, is getting the broadcast after my intent. This is causing that window to be stacked in front of mine. How to I get my window to always be on top? Thanks!

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  • Google Chrome && (cache || memory leaks).

    - by Alexey Ogarkov
    Hello All, I have a big problem with Google Chrome and its memory. My app is displaying to user several image charts and reloads them every 10s. In the interval i have code like that var image = new Image(); var src = 'myurl/image'+new Date().getTime(); image.onload = function() { document.getElementById('myimage').src = src; image.onload = image.onabort = image.onerror = null; } image.src = src; So i have no memory leaks in Firefox and IE. Here the response headers for images Server Apache-Coyote/1.1 Vary * Cache-Control no-store (// I try no-cache, must-revalidate and so on here) Content-Type image/png Content-Length 11131 Date Mon, 31 May 2010 14:00:28 GMT Vary * taken from here In about:cache page there is no my cached images. If i enable purge-memory-button for chrome (--purge-memory-button parameter) it`s not help. Images is in PNG24. So i think that the problem is not in cache. May be Google Chrome is not releasing memory for old images. Please help. Any suggestions. Thanks.

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  • Website Design Templates

    - by user347834
    I am looking fr someone to make me two website templates for my site for free. Here is a quick design of what I want:(Took me 2 minutes in Paint) http:/ /i50.tinypic.com/33p9aut.jpg (You have to push backspace on the first link to join up the http:/ and the other /)and http://i50.tinypic.com/2qmogoo.jpg Email me at [email protected] or [email protected] for more information

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  • Touchscreen sensitivity

    - by Aashish J Kumar
    I'm trying to make an android app only for tablets, which will draw the lines as and where the user touches the screen. It is very simple and there are lot more apps like this. I have a doubt regarding the touch-screen technology. Is there any possibility that if the user touch the screen soft then the lines will be dull and if the user touch the screen harder then the lines drawn will be thicker? Is it even possible to do such things in tablet? I don't have info about the hardware and technology used in tablets, please guide me with a valid answers and please refer me to any blogs or docs which says about the touch sense technology. Thank you

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  • Centre content in a <div>

    - by Ben
    Hi, this is probably very simple to do, but i cant quite get it right. I have a which contains two tags. I would like the tags to be both centred vertically and horizontally. I have set them to centre horizontally by setting the text-align:center; on the div, but cant figure out how to vertically centre them. How would i go about doing this? Thanks.

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