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  • Why do I have to give an identifier?

    - by Knowing me knowing you
    In code: try { System.out.print(fromClient.readLine()); } catch(IOException )//LINE 1 { System.err.println("Error while trying to read from Client"); } In code line marked as LINE 1 compiler forces me to give an identifier even though I'm not using it. Why this unnatural constrain? And then if I type an identifier I'm getting warning that identifier isn't used. It just doesn't make sense to me, forcing a programmer to do something unnecesarry and surplus. And after me someone will revise this code and will be wondering if I didn't use this variable on purpouse or I just forgot. So in order to avoid that I have to write additional comment explaining why I do not use variable which is unnecessary in my code. Thanks

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  • Get ID of a clicked parent ID

    - by Yan Cheng CHEOK
    I try using evt.parent.attr("id") inside jsddm_close, but it doesn't work. <script type="text/javascript"> var ddmenuitem = 0; function jsddm_open() { // When "help-menu" being click, I will toggle drop down menu. ddmenuitem = $(this).find('ul').eq(0).toggle(); } function jsddm_close(evt) { // When everywhere in the document except "help-menu" being clicked, I will close the drop down menu. // How I can check everywhere in the document except "help-menu"? if (ddmenuitem) ddmenuitem.hide(); } $(document).ready(function() { $('#jsddm > li').bind('click', jsddm_open); $(this).bind('click', jsddm_close); }); </script> <ul id="jsddm"> <li><a href="#">Home</a></li> <li><a href="#" id="help-menu"><u>Help</u><small>xx</small></a> <ul> <li><a href="#">menu item 1</a></li> <li><a href="#">menu item 2</a></li> </ul> </li> </ul>

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  • jQuery menu animation

    - by bomortensen
    Hi Stackoverflow, I'm building a website where I'm using jQuery to animate a horizontal tabbed menu. What I want to achieve can be seen here: / link removed / If you hover/mouseover the "Link 1" tab, you'll see that a white div is expanding. Each of the tab menu items are a styled li-tag. What I want to do is, that when you hover/mouseover i.e. the "Link 2" tab, the white div contracts and then expands again with content related to "Link 2" instead of "Link 1". Also, the "Link 1" tab should be expanded by default (i.e. when you just entered the site) Does any of you jQuery ninjas out there know how to do this? What I currently have is this: <script type="text/javascript"> $(document).ready(function(){ var $div = $('#divtest'); var height = $div.height(); $div.hide().css({ height : 0 }); $('#forside').hover(function () { if ($div.is(':visible')) { $div.animate({ height: 0 }, { duration: 200, complete: function () { $div.hide(); } }); } else { $div.show().animate({ height : height }, { duration: 200 }); } return false; }); }); </script> Do I need to have 4 different div's which expands/contracts for every mouseover? If i'm not being clear about what my problem is, please say so and I'll try to elaborate :) Thanks in advance!

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  • Zend Framework: How do I modify/format the form view generated with Zend_Dojo_Form elements

    - by pinardelrio
    I have created a form: <?php class Application_Form_Issue extends Zend_Dojo_Form { public function init() { $this->setName('issue'); $this->setMethod('post'); $id = new Zend_Form_Element_Hidden('id'); $id->addFilter('Int'); $date_recvd = new Zend_Dojo_Form_Element_DateTextBox('date_recvd'); $date_recvd->setLabel('Date Received') //->setRequired(true) /*->addValidator('NotEmpty'); */; More Form elements ... To view this form my view script is: <?php echo $this->form; ?> This all works just fine, with fully functional dojo form elements (datepicker, timepicker, etc) and successfully saving the data. However, now, I want to format the form that is generated with css. Such as grouping some elements and floating left or right, making some input text fields wider/narrower, etc. How? I realize I can modify the view script but it seems like that defeats the purpose of using Zend_Dojo_Form or Zend_Form. Is that a correct assumption?

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  • Upload .txt and keep formating

    - by s2xi
    I have been trying to upload a .txt to my server via a simple php script I made. Everything seems to uploaded correctly, if I open the .txt in Dreamweaver I can see all the formatting is still in tact with spaces and paragraph breaks. The problem I have is when I try to open that file with PHP and import the contents onto my site. I'm not using an editor right now, just a simple div where the contents are echoed. I don't have much experience with uploading/downloading using PHP. Am I not using a command to handle the file contents and keep the initial formatting? In the end I want the user to upload a file, and have PHP read the file and extract certain elements from it based on the number of spaces between paragraph breaks and such. I was able to actually echo the .txt using URLENCODE() which kept the formatting and made all my spaces +'s. Thats the closes I got, but the original file isn't uploaded in the format so I can't do a count for +'s and select x characters after the last +. Hmmm, if someone knows of a script already available that can do this or similar to with me just tweaking that would be awesome.

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  • Cure for puzzle piece programming habbits?

    - by Recursion
    Even though I went to a decent CS school, I was still taught with the mentality of programming with puzzle pieces. By puzzle pieces I mean, looking up code segments at each step of the development process and adding them together as needed. Eventually gathering all of the pieces and having a properly working program. So as an example, if in my program the next step is to tokenize a string, I go to google and search "how do I tokenize a string in language". All instead of critically thinking about its implementation. I personally don't think its a very good way to program and I always seem to forget everything that I have searched for. So how can I get out of this puzzle piece mode of programmer that I was taught.

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  • Sessions not sticking linux server

    - by Jacob Windsor
    I have just moved the dev site over to my linux server for production but the sessions don't seem to be sticking for very long. I am guessing it is the server settings and not the php because it does the same thing with the plesk panel. Whenever a script is executed the sessions seems to get unset. I see nothing in the error log so not sure what it is. It all worked fine on wamp. Anyway I uploaded the php.ini file which was in the wamp server as it had all the settings i needed and all was working on localhost. Not sure what the problem is and this is the final thing that I have to sort out before going into production. And just too add the sessions are being started as they last for a little bit just don't stick around long. Here is the relevent part of my login script just in case there is something wrong with the code: // if login is ok then we add a cookie if($flag == 0) { $pass = htmlspecialchars(mysql_real_escape_string($_POST['pass'])); $username = htmlspecialchars(mysql_real_escape_string($_POST['username'])); $_SESSION['username']=$username; $_SESSION['password']=$pass;

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  • How can I make PHP scripts timeout gracefully while waiting for long-running MySQL queries?

    - by Mark B
    I have a PHP site which runs quite a lot of database queries. With certain combinations of parameters, these queries can end up running for a long time, triggering an ugly timeout message. I want to replace this with a nice timeout message themed according to the rest of my site style. Anticipating the usual answers to this kind of question: "Optimise your queries so they don't run for so long" - I am logging long-running queries and optimising them, but I only know about these after a user has been affected. "Increase your PHP timeout setting (e.g. set_time_limit, max_execution_time) so that the long-running query can finish" - Sometimes the query can run for several minutes. I want to tell the user there's a problem before that (e.g. after 30 seconds). "Use register_tick_function to monitor how long scripts have been running" - This only gets executed between lines of code in my script. While the script is waiting for a response from the database, the tick function doesn't get called. In case it helps, the site is built using Drupal (with lots of customisation), and is running on a virtual dedicated Linux server on PHP 5.2 with MySQL 5.

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  • Why doesn't Firefox redownload images already on a page?

    - by vvo
    Hello, i just read this article : https://developer.mozilla.org/en/HTTP_Caching_FAQ There's a firefox behavior (and some other browsers i guess) i'd like to understand : if i take any webpage and try to insert the same image multiple times in javascript, the image is only downloaded ONCE even if i specifiy all needed headers to say "do no ever use cache". (see article) I know there are workarounds (like addind query strings to end of urls etc) but why do firefox act like that, if i say that an image do not have to be cached, why is the image still taken from cache when i try to re-insert it ? Plus, what cache is used for this ? (I guess it's the memory cache) Is this behavior the same for dynamic inclusion for example ? ANSWSER IS NO :) I just tested it and the same headers for a js script will make firefox redownload it each time you append the script to the DOM. PS: I know you're wondering WHY i need to do that (appending same image multiple times and force to redownload but this is the way our app works) thank you The good answer is : firefox will store images for the current page load in the memory cache even if you specify he doesnt have to cache them. You can't change this behavior but this is odd because it's not the same for javascript files for example Could someone explain or link to a document describing how firefox cache WORKS?

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  • What do I need to learn to make a website that can make a text file?

    - by lala
    I want to make a website, but all I know is basic HTML and CSS. On this website, I want the user to input in multiple text fields (sort of like they take a quiz) and then the program will make a text file based on the user input which the user can download. I want it to work backwards, too, so that the text file is the input. What do I need to learn to make a website to do this? Will javascript do the trick? I'm a beginning to intermediate programmer, mainly with java and I've learned some C# recently. I thought I could learn ASP.Net for this, but it turns out my hosting doesn't support it.

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  • Image on mouseover takes space on PageLoad.

    - by Ram
    Hello, I am trying to show an image on Mouseover and hide it on Mouseout. I am successful in mouseover and mouseout but the image is actually taking the space around the text though i have visibility as hidden.. The text is surrounded with the space of image but the image is displayed on mouseover. Here is the code: <td valign="middle" class="table_td td top" style="width: 347px"> <div id="Style16" style="position:relative; height:100%; left:50%; bottom:700%; visibility:hidden; border:solid 0px #CCC; padding:5px"><img src="images/window-decal-image.gif"></div> <span class="feature_text" style="cursor:pointer" onmouseover="ShowPicture('Style16',1)" onmouseout="ShowPicture('Style16',0)" id="a16">Storefront Window Decal</span> <span class="feature_text_small">(5"x3.5" double sided decal)</span></td> <script language="javascript" type="text/javascript"> function ShowPicture(id,Source) { var vis, elem; if (1 == Source) { vis = "visible"; } else if (0 == Source) { vis = "hidden"; } else { throw new RangeError("Unknown Flag"); } if (elem = document.getElementById(id)) { elem.style.visibility = vis; } else { throw new TypeError("Element with id '"+id+"' does not exist."); } return vis; } </script>

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  • JQuery not removing added element

    - by Scott
    What I want to do is add and remove list items. I have got it to add new items to the list and I can remove existing ones but not the ones that have been added. It seem like it would work but it doesn't. Any help would be appreciated! Here the code: JQuery: <script type="text/javascript"> $(function(){ $('a#add').click(function(){ $('<li><a href="#" id="remove">--</a>List item</li>').appendTo('ul#list'); }); $('a#remove').click(function(){ $(this).parent().remove(); }); }); </script> HTML: <a href="#" id="add">Add List Item</a> <ul id="list"> <li><a href="#" id="remove">--</a> List item</li> <li><a href="#" id="remove">--</a> List item</li> <li><a href="#" id="remove">--</a> List item</li> <li><a href="#" id="remove">--</a> List item</li> </ul>

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  • Is it possible to take a half done web application that has been started using VB.NET and continue u

    - by John ClearZ
    A guy came to me there recently with a half done web app that has been created using VB.NET, nothing major, just a normal site. His original programmer couldn't continue so he wants me to finish it. Problem is I don't program using VB.NET nor have I any intention of learning it for a project this small. Usually I would run from something like this but I need the cash. Should I take the project and continue it using C# or just leave it. Has anyone had a similar experience and how did it turn out.

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  • Flex 4: Scale to a point (zoom into an image where the mouse was clicked)

    - by Jason W
    I've been trying to get this working and I can't seem to figure it out. There is an Image control that when I click on it I need to zoom in (using the center/transform point where the mouse is clicked). I have the zoom transition working great, but when I set transformX & tranformY (with autoCenterTransform false) it doesn't zoom into that point. Here is my code that only zooms in (not to a specific point) <fx:Script> <![CDATA[ protected function imgLogo_clickHandler(event:MouseEvent):void { transformer.play(); } ]]> </fx:Script> <fx:Declarations> <s:Parallel id="transformer" target="{imgLogo}"> <s:Scale scaleXBy="0.5" scaleYBy="0.5" /> </s:Parallel> </fx:Declarations> <mx:Image id="imgLogo" width="250" x="100" y="100" maintainAspectRatio="true" source="@Embed('src/logo.png')" click="imgLogo_clickHandler(event)" /> Any help is greatly appreciated. Thanks

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  • Reading programming tutorials while at work

    - by Teifion
    I work in a call centre and have been told by my manager that when there are no calls coming through they're happy for me to read stuff on the internet. There is a net filter in place but I can access SO from work which is always handy. I'm searching for articles that will make me a generally better programmer. I code in Python but combine it with Postgres and JS quite a lot if that helps. I'm currently reading Dive into python3 but I fear it won't last me much longer and would really like to expand my programming ability.

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  • How would I sort files to directories based on filenames?

    - by gnomed
    I have a huge number of files to sort all named in some terrible convention. Here are some examples: (4)_mr__mcloughlin____.txt 12__sir_john_farr____.txt (b)mr__chope____.txt dame_elaine_kellett-bowman____.txt dr__blackburn______.txt These names are supposed to be a different person (speaker) each. Someone in another IT department produced these from a ton of XML files using some script but the naming is unfathomably stupid as you can see. I need to sort literally tens of thousands of these files with multiple files of text for each person; each with something stupid making the filename different, be it more underscores or some random number. They need to be sorted by speaker. This would be easier with a script to do most of the work then I could just go back and merge folders that should be under the same name or whatever. There are a number of ways I was thinking about doing this. parse the names from each file and sort them into folders for each unique name. get a list of all the unique names from the filenames, then look through this simplified list of unique names for similar ones and ask me whether they are the same, and once it has determined this it will sort them all accordingly. I plan on using Perl, but I can try a new language if it's worth it. I'm not sure how to go about reading in each filename in a directory one at a time into a string for parsing into an actual name. I'm not completely sure how to parse with regex in perl either, but that might be googleable. For the sorting, I was just gonna use the shell command: `cp filename.txt /example/destination/filename.txt` but just cause that's all I know so it's easiest. I dont even have a pseudocode idea of what im going to do either so if someone knows the best sequence of actions, im all ears. I guess I am looking for a lot of help, I am open to any suggestions. Many many many thanks to anyone who can help. B.

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  • Event triggering inside prototype

    - by shivesh
    When I try to call "Test" function I get an error. How to fix that? (no jquery!) Browser:firefox error: TypeError: this.Test is not a function <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <title>Untitled Document</title> <script type="text/javascript"> MyClass = function(){ } MyClass.prototype = { Init: function(){ var txt = document.getElementById("text"); if (txt.addEventListener) { txt.addEventListener("keyup", this.Foo, true) } }, Foo: function(){ this.Test(); }, Test: function(){ alert('OK'); } } window.onload = function(){ obj = new MyClass; obj.Init(); } </script> </head> <body> <textarea id="text" rows="10"> </textarea> </div> </body>

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  • jQuery - making sure content is loaded before it's faded in?

    - by Kenny Bones
    Hi, Nick Craver really helped me out alot with this code in this thread http://stackoverflow.com/questions/2743443/jquery-can-someone-help-stitching-jquery-code-with-ajaxcomplete/2743791#2743791 And it is working. But I notice that there's a small delay after I've clicked a link and before the content is actually loaded. It's not very intense content that's loaded either so I think it's got something to do with the order which things happen in the script. The original code looks like this: $('.dynload').live('click', function(){ var toLoad = $(this).attr('href')+' #content'; $('#content').fadeOut('fast',loadContent); $('#ajaxloader').fadeIn('normal'); function loadContent() { $('#content').load(toLoad,'',showNewContent()) } function showNewContent() { $('#content').fadeIn('fast',hideLoader()); //Cufon.replace('h1, h2, h3, h4, .menuwrapper', { fontFamily: 'advent'}); } function hideLoader() { $('#ajaxloader').fadeOut('normal'); } return false; }); The new code looks like this: $(function() { $('.dynload').live('click', function(){ $('#ajaxloader').fadeIn('fast'); $('#ajaxloaderfridge').fadeIn('fast'); var href = this.href + ' #content'; $('#content').fadeOut('fast',function() { $(this).load(href,'', function(data) { createMenus(); $('#ajaxloader').fadeOut('fast'); $('#ajaxloaderfridge').fadeOut('fast'); $('#content').fadeIn('fast'); Cufon.replace('h1, h2, h3, h4, .menuwrapper', { fontFamily: 'advent'}); }); }); return false; }); }); $(createMenus); function createMenus() { $('#kontrollpanel .slidepanels').kwicks({ min : 42, spacing : 3, isVertical : true, sticky : true, event : 'click' }); } In the original code, #content is faded out, then the function "loadContent" is started. Which is basically what is happening in the new script as well isn't it? And when I was using the old code, the content just faded out and faded in really fast and smooth and with no small pause delay before the content arrived.

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  • Easily digestible UI tips for developers

    - by David
    What are some key UI design tips that every developer should know? While there are a number of UI resources for developers (for example, Joel Spolsky's User Interface Design for Programmers), I'm interested in more of a bullet list that can be communicated in 1 to 2 pages. I'm interested in more tactical, day-to-day UI tips, as opposed to overarching UI design goals that would be covered in a UI design meeting (presumably attended by at least one person with a good UI sense). A collection of these tips might cover about 80% of the cases that an everyday programmer would come across.

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  • Improved technique to store a filename in a variable?

    - by SDGuero
    Greetings, I need to store the filename of a log into a variable so my script can perform some checks on the daily log files. These logs always have a different name because they have a timestamp in the name. Currently I'm using a hodge podged method that pipes an ls command to sed, sort, cut, and tail in order to get the name out. CRON_LOG=$(ls -1 $LOGS_DIR/fetch_cron_{true,false}_$CRON_DATE*.log 2> /dev/null | sed 's/^[^0-9][^0-9]*\([0-9][0-9]*\).*/\1 &/' | sort -n | cut -d ' ' -f2- | tail -1 ) UPDATE: $CRON_DATE is supplied as an argument to the script. It is the date (to the day) that the log was created on. Sometimes multiple logs will exist for the same day so I want this to get the most recent one. A typical filename is fetch_cron_false_031810090452.log I'm pretty sure I kluged this together from some stuff I found google a few months ago. it works now but I'm not really happy with the technique. I have some ideas about how to do this better but I have had great success on this site before and thought it might be best to refer to the stackoverflow gods first. All answers are greatly appreciated. Thanks, Ryan

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  • How to calculate Content-Length for a file download within Kohana PHP?

    - by moritzd
    I'm trying to send a file from within a Kohana model to the browser, but as soon as I add a Content-Length header, the file doesn't start downloading right away. Now the problem seems to be that Kohana is already outputting buffers. An ob_clean at the begin of the script doesn't help this though. Also adding ob_get_length() to the Content-Length isn't helping since this just returns 0. The getFileSize() function returns the right number: if I run the script outside of Kohana, it works. I read that exit() still calls all destructors and it might be that something is outputted by Kohana afterwards, but I can't find out what exactly. Hope someone can help me out here... This is the piece of code I'm using: public function download() { header("Expires: ".gmdate("D, d M Y H:i:s",time()+(3600*7))." GMT\n"); header("Content-Type: ".$this->getFileType()."\n"); header("Content-Transfer-Encoding: binary\n"); header("Last-Modified: " . gmdate("D, d M Y H:i:s",$this->getCreateTime()) . " GMT\n"); header("Content-Length: ".($this->getFileSize()+ob_get_length().";\n"); header('Content-Disposition: attachment; filename="'.basename($this->getFileName())."\"\n\n"); ob_end_flush(); readfile($this->getFilePath()); exit(); }

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  • ASP disable button during postback

    - by user667430
    I have a button which i am trying to add a css class to appear disabled once the user has clicked it. protected void Button_Continue_OnClick(object sender, EventArgs e) { Panel_Error.Visible = false; Literal_Error.Text = ""; if (RadioButton_Yes.Checked) { ...//if radio checked get text and process etc. } } My button onlick is above which simply processes a textbox filled on the page. My button looks like this: <asp:Button runat="server" ID="Button_Continue" CssClass="button dis small" Text="Continue" OnClick="Button_Continue_OnClick" ClientIDMode="Static" OnClientClick="return preventMult();" /> And my javscript is as follows: <script type="text/javascript"> var isSubmitted = false; function preventMult() { if (isSubmitted == false) { $('#Button_Continue').removeClass('ready'); $('#Button_Continue').addClass('disabled'); isSubmitted = true; return true; } else { return false; } } </script> The problem I am having is that the css class added works fine on the first postback, but after which my button onclick doesnt work and the button cant be clicked again if the user needs to resubmit the data if it is wrong Another problem I am having is that with a breakpoint in my method i notice that the method is fired twice on the click.

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  • Zend Metadata Cache in file

    - by Matthieu
    I set up a metadata cache in Zend Framework because a lot of DESCRIBE queries were executed and it affected the performances. $frontendOptions = array ('automatic_serialization' => true); $backendOptions = array ('cache_dir' => CACHE_PATH . '/db-tables-metadata'); $cache = Zend_Cache::factory( 'Core', 'File', $frontendOptions, $backendOptions ); Zend_Db_Table::setDefaultMetadataCache($cache); I can indeed see the cache files created, and the website works great. However, when I launch unit tests, or a script of the same application that perform DB queries, I end up with an error because Zend couldn't read the cache files. This is because in the website, the cache files are created by the www user, and when I run phpunit or a script, it tries to read them with my user and it fails. Do you see any solution to that? I have some quickfix ideas but I'm looking for a good/stable solution. And I'd rather avoid running phpunit or the scripts as www if possible (for practical reasons).

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  • Simply tag-based highlighting with Javascript

    - by nkd
    Hello, I got this code which works: <html> <head> <title>JS highlighting test</title> <script type="text/javascript"> function highlight() { var t = document.getElementById('highlight').innerHTML; t = t.replace(/(if|switch|for|while)\s*(\()/gi, "<b>$1</b>$2"); document.getElementById('highlight').innerHTML = t; } </script> </head> <body onload="javascript:highlight();"> <pre id="highlight"> 1 if(foo) { 2 bar(); 3 } 4 3 while(--baz) { 5 oof(); 6 } </pre> </body> </html> I would like to have it for all <pre> tags instead of just one with some specific and unique id as it works now. The best would be to have an combination of a specific tag with a specific id. Is it possible to extend the small JS function above to work this way (using some document.getElementsByTag(tag).getElementsById(id).innerHTML or something alike (I don't know what exactly suites the need) in a loop? I tried myself but with no real success. I need only as simple solution as possible, nothing really special. Thank you for your ideas. -- nkd

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  • Need help in javascript

    - by raja
    Hi: I am getting the error for the below code. Please help me out. <html><head> <title>(Type a title for your page here)</title> <script language=JavaScript> function check_length(my_formm,fieldName) { alert(fieldName); alert(document.my_formm.fieldName.value); } </script> </head> <body> <form name=my_form method=post> <input type="text" onKeyPress=checkCompanyName(); onChange=check_length("my_form","my_text"); name=my_text rows=4 cols=30 value=""> <br> <input size=1 value=50 name=text_num> Characters Left </form> </body> </html>

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