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• what are the limitations of mobile phones and web development

  - by Kieran

  simple really.. I am have been asked to do a mobile site (straight html + css (+ maybe jquery mobile later on)). The site will need to support the new type smart phone and the old type Nokia/(Symbian OS) with the web browser. Doubts and reservations aside as to anyone without a smart phone would bother visiting this site it still needs to support it. My first question is do older phones support PNG images and transparancey... But this has led me to a much broader question of what are some of the limitations of developing for older phone platforms is there anything that has caught mobile web devs out and had them scratching their head for an afternoon.. what are the limitations of mobile phones?

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• How do I detect a click event on a google maps PolyLine overlay?

  - by Tom

  It seems to me that I should be able to do the following to detect a click event on a line on a google map: var line = new GPolyline( ... ); map.addOverlay(line); GEvent.addListener(line, "click", function(latlng){ alert("clicked"); }); The api reference says this is available in version 2.88, which was released in 2007(!?), so I'm assuming that's what I'm using, but I don't know how to confirm that. I also tried setting the {clickable:true} option explicitly (it's supposed to be the default.) I've tested in FireFox 3 and Opera 9.6 so doubt it's browser specific. I'm also using jQuery on the page. I have plenty of code detecting clicks on markers that works fine, clicking on lines would be really nice, can anyone enlighten me?

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• PHP connection_aborted doesn't work with nginx?

  - by TheOnly92

  I can't seem to get the function connection_aborted to work with nginx. The code I used to test is as follow: <?php ignore_user_abort(true); ob_implicit_flush(); $i = 0; while (!connection_aborted()) { echo $i; $i++; sleep(1); } file_put_contents('test',$i); In Apache, it works correctly, although it delays a little. i.e. When I press stop button on browser when "3", the 'test' file shows "8". That is an acceptable margin, but on nginx, it doesn't seem to output anything to the 'test' file.

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• change iframe source in ie using javascript

  - by rohini

  Hi, i have used an iframe which looks like this <iframe style='width: 330px; height: 278px' scrolling='no' name="iframeId" class="advPlayer" id="iframeId" frameborder="0" src='../../player/iabpreview.php?adid=<?php echo $selectedAdIdx ?>&amp;autoPlay=true'></iframe> whenever i click a div,i have to change the source of the iframe..so i am using if ($j.browser.msie) { frames['iframeId'].window.location="../player/iabpreview.php?adid="+adId+"&autoPlay=true"; }else { $j(".advPlayer").eq(0).attr("src", "../player/iabpreview.php?adid="+adId+"&autoPlay=true"); } this is working in firefox...but not in ie..... someone please help me...

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• How do I change the style of an input box in IE7 on focus?

  - by Cen

  I know IE7 has issues... I've read posts here and on Google telling me I need to set the style by hand onfocus() and onblur(). However, everything I try isn't working! Here is my jQuery $(document).ready(function(){ if (jQuery.browser.msie === true) { $("input.date-picker").each(function(i) { var $foo= $(this); $foo.bind('onfocus onblur', function() { $(this).toggleClass('smalltxt-active'); }); }); }//end if }); The a corresponding box <input name="ctl00$SelectionContent$Selections1$txtDestinationDate" type="text" id="ctl00_SelectionContent_Selections1_txtDestinationDate" class="date-picker" style="width:80px;" /> I have already confirmed that my code is detecting MSIE. That I am getting a count of 2 input.date-picker objects. Any ideas? Thanks in advance,

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• What is the standard way to add an icon to a link with CSS?

  - by ewernli

  I'm used to use padding + background-image to place an icon next to a link. There are many example of this approach. Here is one from here: <a class="external" href="http://www.othersite.com/">link</a> a.external { padding-right: 15px; background: transparent url(images/external-link-icon.gif) no-repeat top right; } But most browser don't print background image, which is annoying. What is the standard to place icon next to links which is semantically correct and works in all cases? (I couldn't find an exact similar question. If there is one, just close this one as duplicate)

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• jQuery .submit() woes with IE8

  - by Jitesh

  I am trying to submit a delete link click via a http post to my asp.net mvc controller. While my code below works for chrome it does not work in IE8. Any pointer will be very useful. Setup:- Browser: IE8 jQuery: 1.4.1 MVC: 2.0 The delete link is:- <a title="Delete contact" href="/Contacts/Delete/<%= Model.Contact.Id %>" class="delete" rel="Are you sure you want to delete <%= Html.Encode(Model.Contact.Name) %>?">Delete</a> and the jqeury handler for the click of delete is $("a.delete").click(function() { if (confirm($(this).attr("rel"))) { var form = "<form method='POST' action='" + $(this).attr("href") + '" style='display:none;'></form>"; $(form).submit(); } return false; });

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• Web based interface for open SSL client certificates

  - by Felix

  Hi there! We are currently developing a apache2-based web application and want to invite some beta testers to give it a try. To be on the safe side, access should be provided by individual browser certificates (.p12) which are issued using a (fake) CA. Our users should be passing a complete register/login process and some of them will be granted administrative privileges within the application. That's why a preceding simple web-based authentication won't be sufficient. Atm, I using a serverside shellscript to generate the certificates each time. Do you know about a small, web-based tool to simplify the process of generating / revoking those certificates? Maybe an overview of the CA's index.txt plus the option to revoke a cert and a link to download them directly?

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• How to quickly access documentation in Xcode 4.5.1?

  - by International Frog

  How can I quickly access the documentation for a symbol, method, enum, etc. in Xcode 4.5? alt + click on symbol shows a quick-info. Apple removed the dictionary icon which opened the documentation. I tried all other possible shortcuts of the cmd / alt / shift / click mumbo jumbo dance and none of them open the documentation browser. I suppose there is a hidden trick to quickly open it anyways? Edit: Figured out this new quick-info box has a link to the documentation.

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• I don't see any stacktrace running webapp with JBoss

  - by anna

  hi everyone. I have some very annoying trouble with jboss. I'm developing simple web-app using richfaces and I'm facing the problem that when I deploy and run application in browser jboss shows just following message: This page contains the following errors: error on line 12 at column 16: internal error Below is a rendering of the page up to the first error. And that's all. No stacktrace! It's so uneasy to search for a source of problem. Could anyone help me to "turn on" stacktracing?

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• Does anyone know of a good free bulk upload tool for web apps?

  - by Ev

  I have a web application in which a user has to upload images to a gallery. At the moment they need to upload one image at a time so it's pretty tedious. I'd like to implement a system where they could potentially drag and drop files into the browser, or select a folder to upload. Any ideas? Thanks in advance! (By the way; it's a .Net App if it makes a difference, but I was thinking most of the work would be happening client side so shouldn't matter) -Ev

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• REST client website login

  - by Jordan

  I have written a REST service that uses WSSE as an authentication method but i want to be able to use this rest service through a browser by creating a website around the service. I want the user to be able to log in on the website then when they view, for example the "view users" page an ajax request is made to test.com/users and back comes the list. The part i'm trying to get my head around is the logging in/out on the website and keeping the user logged in across pages. Since in a true REST implementation there's no state held on the server, i can't use $_SESSION and now i don't know where to start! What is the best way to go about this? Do i still need to store session information on the server then possibly use cURL to make the request? Thanks Jay

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• how to handle exceptions/errors in php?

  - by fayer

  when using 3rd part libraries they tend to throw exceptions to the browser and hence kill the script. eg. if im using doctrine and insert a duplicate record to the database it will throw an exception. i wonder, what is best practice for handling these exceptions. should i always do a try...catch? but doesn't that mean that i will have try...catch all over the script and for every single function/class i use? Or is it just for debugging? i don't quite get the picture. Cause if a record already exists in a database, i want to tell the user "Record already exists". And if i code a library or a function, should i always use "throw new Expcetion($message, $code)" when i want to create an error? Please shed a light on how one should create/handle exceptions/errors. Thanks

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• ExtJS accordion setActiveItem

  - by xsix

  Hello. I am developing an application using ExtJS. I have an accordion and I need to select an active item(so it expands). Accordion.setActiveItem outputs: "setActiveItem" is not a function in a browser's error window. Second issue is that hideCollapseTool property, when set to true in the initialisation, doesn't do anything. Collapse tools still are being displayed. I am using ExtJS 3.1.1. I would be very thankful for any tips and answers.

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• Is it possible to make a video download panel for Chrome ( using NPAPI to catch media stream)

  - by user359278

  Hi guys. I'm trying to make a media Download bar for Chrome Browser like Real Player's one ( a DLL plugin ): Whenever you open a web-page which contents "media stream" like Youtube..., it will show a download bar at the left-top corner of the flash player - allow you to download this video/song to your computer. I know it use NPAPI to catch the media stream but how? Which method do I have to use? Is there any document for me? I have never worked on a NPAPI-project before. Thanks in advance and so sorry for bad English.

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• Do you draw the entire object?

  - by vbman11

  Hi I'm working on learning 3d game development and I'm starting with JavaScript and the html5 canvas and I was wondering if I were to have a 3d model do I draw the entire model(front, back, etc) and let the web browser decide what to render or should I try to just draw the sides that are in view of the camera? I ask this because I can see how it would be faster to do the latter of the 2 but that can get very complex and I'll need to do quite a bit more research to find how to do that. Thanks!!

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• access vmware local server from internet

  - by goutham

  I have installed a ubuntu machine with apache server in Vmware-workstation Now how can I access apache server from internet using my IP. Details: network for vmware :NAT the ip address in ubuntu is 192.168.1.4 my host IP is *..239.232 if I type 192.168.1.4 in web browser I get the apache content... but if I type my host IP then I dont get it.. If I install a apache server on host(win7) I can access the host apache content with my host IP from anywhere .. I want to access the vmware apache content from internet using host IP ....

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• Tree View / File View Control for C#

  - by Jason

  I have been looking for a C# tree control for displaying a file system that has the following capabilities: Select a starting directory. I don't always want to start at a "default" top directory level. The ability to grab an event when the user double clicks on a file in the tree. I want to handle opening the file within my application. I have been looking at this C# File Browser. Unfortunately, I have not been able to figure out how to do meet my second need. (If anybody can clear that up for me, I would like that even better.) Thanks for any help.

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• How to debug "The type initializer for 'my class' threw an exception"

  - by JFB

  I am getting the exception: The type initializer for 'my class' threw an exception. in my browser after running my web application. Since this seems to be an error message generated from the view (.aspx), there is no way I can see the stack trace or any log for the source of this error. I have read a bit around the net and one solution to debugging is to throw a TypeInitializationException and then looking at the inner exception to find out what was wrong. How can I do this when I don't know where to surround code with a try/catch ?

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• Is PNG the most economically sound file format to store pictures in?

  - by raoulsson

  I am looking for an economically sound solution to store pictures long time. I read about the PNG file format that it has superior characteristics compared to JPEG, namely in these categories: no patents, no licenses, no royalities no quality loss yet compressed I have a lot of big ESP's from PhotoShop that contain tons of metadata, like layers and color profiles that I don't need to store (those were handy for the designer, when he worked with it). I want to convert these images without that hidden data, to a new target file format. Another side condition to my question is that the target file format has to be displayable in the browser. So I guess my options are limited anyway: GIF, JPEG, PNG. Am I missing something or is PNG the best fit for my case?

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• Java - How to change context root of a dynamic web project in eclipse

  - by Yatendra Goel

  I have developed a dynamic web project in eclipse. Now I can access it through my browser using the following url: http://localhost:8080/MyDynamicWebApp Now I want to change the access url to http://localhost:8080/app I changed the context root from the project properties | Web Project Settings | Context Root But it is not working. The web app still has the access url as earlier. I have re-deployed the application on tomcat, re-started the tomcat and have done everything that should be done but the access url is the same as earlier. I found that there were no server.xml file attached with the WARfile. The how the tomcat is determining that the context root of my web app is /MyDynamicWebApp and is allowing me to access the application through that url

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• Problem with Wicket and SignInExample in IE8

  - by KJQ

  I have an interesting problem with Wicket. I'm basically duplicating the 'authentication' example from the v1.4.x in SVN. It works fine in FireFox and Chrome but not in IE8. When in IE8, after I click the submit button it returns with a 404 error but i can manually paste the "destination" url in and it goes there fine (as an authenticated user). Another scenario is, I try to login, it gives me a 404, I hit refresh (looking at the html source I see the page version incremented), relogin and it works fine. So to summarize: I login the first time in IE8 and it returns a 404 error, hit refresh and ogin again and it works fine. I login the first time in IE8 and it returns a 404 error, manually paste the destination url in the browser and it goes there fine as if im logged in. I've compared everything between IE8 and FireFox from the rendered source and the code is not doing anything special but I cannot figure out what the differences are? Thanks. KJQ

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• How to run shell script with live feedback from PHP?

  - by Highway of Life

  How would I execute a shell script from PHP while giving constant/live feedback to the browser? I understand from the system function documentation: The system() call also tries to automatically flush the web server's output buffer after each line of output if PHP is running as a server module. I'm not clear on what they mean by running it as a 'server module'. I attempted to run the script in the cgi-bin, but either I'm doing it wrong, or that's not what they mean. Example PHP code: <?php system('/var/lib/script_test.sh'); Example shell code: #!/bin/bash echo "Start..." for i in {1..10} do echo "$i..." sleep 1 done echo "Done."

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• How call soap service using jQuery

  - by Alen D

  I have a problem with calling soap service from php page. I was implemented two page,first page was created in php, and second page was created in asp.net. In asp.net application I have SOAP service, which methods should be called from php. Method on my SOAP service, look like this: [WebMethod] [ScriptMethod(ResponseFormat = ResponseFormat.Json)] public bool UpdateVotes(string vote) { //Code } On PHP application I call UpdateVotes method on the next way: $.ajax({ type: "POST", url: "http://localhost:5690/VoteServices.asmx/UpdateVotes", data: "{'vote': '" + vote + "'}", contentType: "application/json; charset=utf-8", dataType: "json", success: function (msg) { }, error: function (xhr, status, error) { } }); First I run asp.net application with SOAP service, and than I start php aplication. When i click on button for calling web method on service i browser console i got this error: Failed to load resource: the server responded with a status of 500 (Internal Server Error) http://localhost:5690/VoteServices.asmx/UpdateVotes XMLHttpRequest cannot load http://localhost:5690/VoteServices.asmx/UpdateVotes. Origin http://localhost:8080 is not allowed by Access-Control-Allow-Origin.

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• Why does my text has the justify effect when I didnt made it to have this effect (css/php)

  - by linkcool

  Why my text has the justify effect? In my whole site, I make echos and i dont specify a "text-align:justify;" but my text is still justifying. Justify is when you make the browser window smaller, the text moves so it fits in the window. I tryed making something like this: <?php echo "<h1>some stuff.</h1>"; ?> <html> <head> <style> h1 { text-align:center; } etc.... but it just makes the text go in the center and it keeps the justify effect. please help me =[ thanks

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