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• Ajax security problem

  - by coolboycsaba

  I want to create a browser based game and I have a huge problem, the game can be easily hacked. The problem is at a page where you can go to "work", I store in a file the work ending date and the amount of money what you will receive after finishing the work. There are 4 type of works. The problem is that I use ajax to send to a php file the necessary information. The URL looks like this x.php?date=....&pay=.... The javascript part of the page calculates the date and the pay but if you simply enter in your URL bar x.php?date=anynumber&pay=99999 you will receive that 99999 dollars. What should I do ? And sorry for my bad english :)

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• Obtain the pathName dinamically for ASP.NET MVC

  - by vikitor

  Hello, I'm looking for a solution that allows me to get the parent page pathname from a partialView invoked. For example I have an Action baa and a controller boo so the javascript to obtain this will be window.location.pathname, and it returns /boo/baa. The thing is that I use a partial view, so when I try to retrieve the pathname via the URL helper, what I obtain is the PartialView one, and what I need is the pathname for the action that invokes it. I want to do this because I want to show certain things of the partial view depending on the pathname of the parent view that invokes it. Is there a way to do this with ASP.NET MVC? Thank you all in advance,

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• How should it work if I want a page to have a theme-roller (more or less like the jQuery themeroller

  - by DanC

  The basic idea is to create a page that gives the user the ability to choose a skin or theme from a menu. When the user selects the desired skin/theme, it should be applied to the page, just like the jquery ui theme roller page. So, to be more precise, what I am trying to know is how to apply dynamically the style to a page - how to load the css and so forth. On the jquery ui theme roller, is there any javascript triggered after the new set of styles is loaded? (for js positioning or sizing?) (The answer may be simple as "just create a new style element and set its src"...) Just to be clear, I don't need the option to let users customize the UI, I want them just to be able to pick from a few pre set styles. Thanks!

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• What is the cheapest non-colocation way to serve about 10 static files at a rate of 100 megabits per

  - by Mark Maunder

  I've looked at Amazon S3 and it costs roughly $4746 per month for 100 megabits/s (which translates into 31,640 Gigabytes of data transferred. That's at a rate of $0.15 per gig.) I haven't found a cheaper "cloud" option. I'm curious if there's any other cloud hosting option out there cheaper than S3. Uptime is not an issue because I can build failover for most things into the browser. e.g. I can use javascript to say "if the image didn't load then go to this other URL instead." FYI I'm currently using a colocation facility which is about 30% cheaper than S3 and I'm familiar with colo prices - so this question is really about "cloud" services and by that I mean services where I don't have to worry about the infrastructure.

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• Getting started with html5 web sockets

  - by Stanni

  Hi, I'm very interested in learning about the new feature in html5 called web sockets. I've looked into it and have come out with a few questions. It seems that before I can start implementing this new technology into a web application of mine I need to have a web server which supports it. Does this involve downloading something and installing it on the said server? Is there more than one available? If so where do I find these? I already have experience with JavaScript and html/css of course, Are there any other languages I will need to learn to start using web sockets? Any additional information that you think I might need to know would be appreciated.

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• What's a better choice for SQL-backed number crunching - Ruby 1.9, Python 2, Python 3, or PHP 5.3?

  - by Ivan

  Crterias of 'better': fast im math and simple (little of fields, many records) db transactions, convenient to develop/read/extend, flexible, connectible. The task is to use a common web development scripting language to process and calculate long time series and multidimensional surfaces (mostly selectint/inserting sets of floats and dong maths with rhem). The choice is Ruby 1.9, Python 2, Python 3, PHP 5.3, Perl 5.12, JavaScript (node.js). All the data is to be stored in a relational database (due to its heavily multidimensional nature), all the communication with outer world is to be done by means of web services.

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• Replace input type=file by an image

  - by nikospkrk

  Hi, Like a lot of people, I'd like to customize the ugly input type=file, and I know that it can't be done without some hacks and/or javascript. But, the thing is that in my case the upload file buttons are just for uploading images (jpeg|jpg|png|gif), so I was wondering if I could use a "clickable" image which would act exactly as an input type file (show the dialog box, and same $_FILE on submitted page). I found some workaround here, and this interesting one too (but does not work on Chrome =/). What do you guys do when you want to add some style to your file buttons? If you have any point of view about it, just hit the answer button ;) Cheers, Nicolas

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• ajax send parameter to jsp but failed

  - by kawtousse

  I am trying to send data to my jsp via:"xhr.send(projectCode);" but apparently the parameter is not received when I am trying to realise it with System.out.print it is a null displayed. so the story from the begining. my javascript function send the parameter to the jsp whitch construct an xml file and resend to the first one. this will reconstruct my second dropdownList with the xml code constructed and received. so the problem that the parameter dosent sent at all. What should I do.

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• Spring MVC - JSP - Place to Store Environment Specific Constants

  - by jboyd

  Where in the Spring-MVC/JSP application would you store things that need to be accessed by both the controllers and views such as environment specific base_url's, application ids to be used in javascript and so on? I've tried creating an application scoped bean and then at the top of my JSPs, but that doesn't seem to be working. <!-- Environment --> <bean id="myEnv" class="com.myapp.MyAppEnvironment" scope="application"> <property name="baseUrl" value="http://localhost:8080/myapp/"/> <property name="videoPlayerId" value="234346565"/> </bean> And using it in the following manner <jsp:useBean id="myEnv" scope="application" type="com.myapp.MyAppEnvironment"/>

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• jQuery Ajax Methods Not Returning XHR Object

  - by Nate

  UPDATE: I haven't figured out what's going on, but this definitely seems to be a problem with my project. After creating a simple test page, I was able to verify that getJSON does in fact return an XHR object like it's supposed to. Per the stackoverflow question/answer here: Kill ajax requests using javascript using jquery. and a number of other question/answers on this site and others, the jQuery Ajax methods should return the XHR object. However, when I run the following code, request is "undefined". var request = $.getJSON(url, function(data) { console.log(data); }); console.log(request); Did I miss a change in jQuery? I'm using 1.4.4.

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• Too Few Arguments

  - by NoahClark

  I am trying to get some Javascript working in my Rails app. I want to have my index page allow me to edit individual items on the index page, and then reload the index page upon edit. My index.html.erb page looks like: <div id="index"> <%= render 'index' %> </div> In my index.js.erb I have: $('#index').html("<%=j render 'index' %>"); and in my holders_controller: def edit holder = Holder.find(params[:id]) end def update @holder = Holder.find(params[:id]) if @holder.update_attributes(params[:holder]) format.html { redirect_to holders_path } #, flash[:success] = "holder updated") ## ^---Line 28 in error format.js else render 'edit' end end When I load the index page it is fine. As soon as click the edit button and it submits the form, I get the following: But if I go back and refresh the index page, the edits are saved. What am I doing wrong?

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• AngularJs not working with dynamic html

  - by user2541753

  In my cshtml file I have a form named 'ApplyMedicalMain' and I want to show a dynamically loaded division when the form is dirty but its not happening even though the form is dirty ... Below is my code that i got in Firefox Inspect Element: <form class="form_section ng-dirty ng-valid ng-valid-required" name="ApplyMedicalMain" method="post" action="/MVC/Quote/ApplyMedical"> <div id="Step1_PartialView" class="QuoteStep1"> <script type="text/javascript" src="/Scripts/Renderings/Presales/ApplyMedical.js"> <div name="Conditions" id="conditions_or_symptoms" ng-hide="ApplyMedicalMain.$dirty"> <div class="generic_error_message select"> <div class="error_icn_message"></div> </div> As you can see above, I have mentioned ng-hide for the division name='conditions' but it is not getting hidden even though the form has class 'ng-dirty'.And please note that the the division 'conditions' is loaded dynamically from other partial view. can someone help me ?

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• Web Forms 2.0: Editor & Libraries

  - by lacco

  Hi! I would like to build a web application where users can create forms with very few technical knowledge. Since they need "advanced" features like validations, required fields and some more, I am currently evaluating XForms and web forms 2.0 (from HTML 5 spec). Concerning web forms, my research couldn't find any answers for the following questions: Are there any (JavaScript) libraries out there which make web forms fully available in browsers which have currently no support for them (i.e. Firefox)? Is there a "web forms editor" which allows creating input and select fields, with setting attributes like the type, required, ...? It has to be something visual, and must create "nice" html. Any help/ hints would be appreciated!

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• Handling Session ID with Spring

  - by Max

  Hi, I'm trying to build a Spring server for GWT (you can think of it as of Javascript AJAX client). But I can't decide on one point of architecture. How should session be created and used? The obvious easiest way - is to use HTTP sessions (cookies and stuff). Looks fine, but I think that sending session ID separate from the headers would be better (SOAP style). So, what is better: getMyPetsName(String sessionID, int petID) or getMyPetsName(int petID) + session ID through HTTP header (cookies or something). Another question is, if I use the first way (which I like more) - how do I handle session in Spring? I'm really newbie in Spring, and googling did not help. What I mean is: String getMyPetsName(String sessionID, int petID) { Session s = someWayToGetItById(sessionID); } Thanks in advance.

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• Jquery code working in all browsers apart from FF

  - by alan

  Hi, I have written the following jquery sitting in the head tags of my HTML It is supposed to bring the image that is being hovered over to full opacity and slide another image over it from the right, then return when un-hovered. <script type="text/javascript"> $(function() { $('ul#img-nav li').css({ "opacity": .5 }); $('ul#img-nav li').hover(function() { $(this).stop(true).animate({"opacity":1}); $(this).children('.overlay').stop(true).animate({"left" : "18px" }); }, function() { $(this).stop(true).animate({"opacity":.5}); $(this).children('.overlay').stop(true).animate({"left" : "180px" }); }); }); This works fine in Safari, Chrome, IE (7,8) but not in FF 3.6. Any suggestions why this might be? Many thanks

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• google maps plot route between two points

  - by amarsh-anand

  I have written this innocent javascript code, which lets the user create two markers and plot the route between them. It doesnt work, instead, it gives a weird error: Uncaught TypeError: Cannot read property 'ya' of undefined Can someone suggest me whats wrong here: // called upon a click GEvent.addListener(map, "click", function(overlay,point) { if (isCreateHeadPoint) { // add the head marker headMarker = new GMarker(point,{icon:redIcon,title:'Head'}); map.addOverlay(headMarker); isCreateHeadPoint = false; } else { // add the tail marker tailMarker = new GMarker(point,{icon:greenIcon,title:'Tail'}); map.addOverlay(tailMarker); isCreateHeadPoint = true; // create a path from head to tail direction.load("from:" + headMarker.getPoint().lat()+ ", " + headMarker.getPoint().lng()+ " to:" + tailMarker.getPoint().lat() + "," + tailMarker.getPoint().lng(), { getPolyline: true, getSteps: true }); // display the path map.addOverlay(direction.getPolyline()); } });

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• JQuery Selector - Select this, not that?

  - by JasonS

  Hi, I have created a script which is surprisingly working. (I do not do much JavaScript) What I have is a load of images listed within a div. These images are hidden. JQuery gets the properties of the images and puts them into an array. When the body is clicked, the background image of the page changes. This works nicely. However, I now have a problem. There are several elements which I shouldn't change the background when they are clicked. Namely, navigation, footer and caption. How do I create a selector which makes the body clickable, yet ignores clicks on the above 3 div's?

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• BDD-testing using a UI driver (e.g. Selenium for a web-application)

  - by jonathanconway

  Can BDD (Behavior Driven Design) tests be implemented using a UI driver? For example, given a web application, instead of: Writing tests for the back-end, and then more tests in Javascript for the front-end Should I: Write the tests as Selenium macros, which simulate mouse-clicks, etc in the actual browser? The advantages I see in doing it this way are: The tests are written in one language, rather than several They're focussed on the UI, which gets developers thinking outside-in They run in the real execution environment (the browser), which allows us to Test different browsers Test different servers Get insight into real-world performance Thoughts?

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• Multiple children in single form in rails

  - by CaptnCraig

  I have a model that has an arbitrary number of children entities. For simplicity lets call the entities Orders and Items. I would like to have a create Orders form where I input the order information, as well as add as many items as I want. If I click the "Add another item" button, a new set of form elements will be added to input the new data, amounts, etc.. I could hack this out in pure javascript, but I'm pretty sure there has to be a more magical, railsish way to do it, maybe with a partial view or something. I'm just a little too new to rails to know what it is. What is the best way to dynamically add the new form elements, and then to access them in the create controller?

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• Is it worth the time to switch from AjaxControlToolkit to jQuery?

  - by Matthew Jones

  I keep hearing all these things about how awesome jQuery is and how the AjaxControlToolkit sucks. Unfortunately, I only heard about this after I built my entire WebForms site using the toolkit. Now I am considering switching, if not entirely, mostly to jQuery. This is partially for the experience (having never coded in Javascript or used any frameworks) and partially because I think I have more control over jQuery. There is no pressing need to switch, but I'm considering doing it anyway. Is it worth tackling the learning curve for jQuery just to get the experience, of should I leave my working site well enough alone?

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• What do we need for flash 10 development?

  - by user246114

  Hi, I'm looking to do some development in flash 10, specifically for the new file api (reading/writing files on the user's local machine). What do I need to develop for flash 10, just Flash cs4?: http://tryit.adobe.com/us/cs4/flash/c/?sdid=ETJMX& or is there some other ide? All I'm really interested in doing is: Make a small swf file which reads a file on the user's machine I will host it in an html file When file read is done, I just want to send its contents as a string to a javascript function for further processing. Not sure if I can get away with the free adobe air thing for this? I need it to run in a webpage but I don't intend to do any more development outside of the above, Thanks

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• .wmv player not working

  - by blackessej

  So...I've got an embedded object that looks like this: <div id="vid"> <script type="text/javascript"> var cnt = document.getElementById("vid"); var src = 'wmvplayer.xaml'; var cfg = { file:'images/photostory.wmv', height:'240', width:'360', windowless:'true' }; var ply = new jeroenwijering.Player(cnt,src,cfg); so1.addParam('allowfullscreen','true'); so1.addParam('allowscriptaccess','always'); so1.addVariable('file','images/photostory.wmv'); so1.write('vid'); </script> </div> ..with all the right scripts in the head and everything. The player loads just fine, all the functionality is there, but the video just wont play. It seems like it starts to, but nah... Thanks, in advance, for any help.

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• Scriptaculous Slider stops working in iFrame

  - by KcYxA

  Hi there, I am stumped! I have a form for leaving reviews that uses a slider from the Scriptaculous library. The form is retrieved through Ajax once a user clicks on a link to leave a review and all works fine. In order to enable ajax-looking file uploading, I'm using an iFrame to submit the review. My problem occurs when the form is returned due to user input errors. The slider stops working! No Javascript errors. The Control.Slider gets initialized, yet it doesn't work. Any ideas on why this could be happening? Thanks!

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• Difference in css position IF/FF, how to solv my problem?

  - by Jason94

  Ive made some divs and it works as intended in firefox: http://yfrog.com/0y95240044p But not in internet explorer 8: http://yfrog.com/0obadpp Anyone have a tip? structure is like this: <div id="container"> <div id="imgContainer"> <div id="button"></div> </div> <div id="text">text</div> </div> imgContainer gets a image as background by some javascript magic.

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• Ruby implementation of conversion between Latitude/Longitude and OS National Grid Reference point?

  - by Harry Wood

  For converting between Latitude/Longitude and UK's Ordnance Survey National Grid eastings and northings, this seems to be the most popular explanation and reference implementation in JavaScript: http://www.movable-type.co.uk/scripts/latlong-gridref.html The web is littered with other implementations in different languages. Making the conversion via PostGIS queries is another alternative. ...but did anyone implement this maths in ruby? OSGridToLatLong is the direction I'm looking for just at this moment, but I would have thought a library for converting in both directions must surely be available in a gem somewhere. I'm just not searching for the right thing.

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