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  • Safely turning a JSON string into an object

    - by Matt Sheppard
    Given a string of JSON data, how can you safely turn that string into a JavaScript object? Obviously you can do this unsafely with something like... var obj = eval("(" + json + ')'); ...but that leaves us vulnerable to the json string containing other code, which it seems very dangerous to simply eval.

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  • Json return code to simplify if possible.

    - by pirzada
    Can you simplify this code?. Is there anything we can do to make it more simple. I am not sure but it looks ugly to me. [HttpPost] public JsonResult UserDetailById(int userId, string username) { IQueryable<Company> repository = companyRepository.GetGridCompanies(); Employee emp = companyRepository.GetEmployee(userId); //Drop down fill var a = (from c in repository .OrderBy(c => c.companyName) select new { Id = c.companyID, Name = c.companyName }).ToArray(); var data = new { Id = emp.companyID.ToString(), Name = emp.employeeFirstname + " " + emp.employeeLastname, Fn = emp.employeeFirstname, Ln = emp.employeeLastname, Dept = emp.employeeDepartment, Sup = emp.employeeSup.ToString(), HireDate = String.Format("{0:MM/dd/yyyy}", emp.employeeHiredate), CompVm = a }; return Json(data); }

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  • Accessing Element Count and Values Within a Hidden Div

    - by Tegan Snyder
    I'm having trouble grabbing the TR count in JQuery of a table that inside a DIV set to be hidden. Here is an example: <div id="questions" style="display: none;"> <table id="tbl_questions"> <thead> <tr> <th>Question</th> <th>Weight</th> </tr> </thead> <tbody> <tr id="q0"> <td id="td_question0">Some Question 0</td> <td id="td_wieght0">Some Weight 0</td> </tr> <tr id="q1"> <td id="td_question1">Some Question 1</td> <td id="td_wieght1">Some Weight 1</td> </tr> </tbody> </table> </div> Note the table is within the containing div. It's set to display: none. When I try to run this JQuery code it returns 0. var question_count = $("#tbl_questions> tr").size(); alert(question_count); Any ideas? I'm try to locate the count so I can then build an array of each question and weight in the table. Since the ID's provide me with an index this should be simple, but is the fact that it is contained in a hidden DIV going to be a problem just as the above question? Thanks, Tegan Snyder

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  • Destroying a record via RJS TemplateError (Called ID for nil...)

    - by bgadoci
    I am trying to destroy a record in my table via RJS and having some trouble. I have successfully implemented this before so can't quite understand what is not working here. Here is the setup: I am trying to allow a user of my app to select an answer from another user as the 'winning' answer to their question. Much like StackOverflow does. I am calling this selected answer 'winner'. class Winner < ActiveRecord::Base belongs_to :site belongs_to :user belongs_to :question validates_uniqueness_of :user_id, :scope => [:question_id] end I'll spare you the reverse has_many associations but I believe they are correct (I am using has_many with the validation as I might want to allow for multiple later). Also, think of site like an answer to the question. My link calling the destroy action of the WinnersController is located in the /views/winners/_winner.html.erb and has the following code: <% div_for winner do %> Selected <br/> <%=link_to_remote "Destroy", :url => winner, :method => :delete %> <% end %> This partial is being called by another partial `/views/sites/_site.html.erb and is located in this code block: <% if site.winners.blank? %> <% remote_form_for [site, Winner.new] do |f| %> <%= f.hidden_field :question_id, :value => @question.id %> <%= f.hidden_field :winner, :value => "1" %> <%= submit_tag "Select This Answer" %> Make sure you unselect any previously selected answers. <% end %> <% else %> <div id="winner_<%= site.id %>" class="votes"> <%= render :partial => site.winners%> </div> <% end %> <div id="winner_<%= site.id %>" class="votes"> </div> And the /views/sites/_site.html.erb partial is being called in the /views/questions/show.html.erb file. My WinnersController#destroy action is the following: def destroy @winner = Winner.find(params[:id]) @winner.destroy respond_to do |format| format.html { redirect_to Question.find(params[:post_id]) } format.js end end And my /views/winners/destroy.js.rjs code is the following: page[dom_id(@winner)].visual_effect :fade I am getting the following error and not really sure where I am going wrong: Processing WinnersController#destroy (for 127.0.0.1 at 2010-05-30 16:05:48) [DELETE] Parameters: {"authenticity_token"=>"nn1Wwr2PZiS2jLgCZQDLidkntwbGzayEoHWwR087AfE=", "id"=>"24", "_"=>""} Rendering winners/destroy ActionView::TemplateError (Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id) on line #1 of app/views/winners/destroy.js.rjs: 1: page[dom_id(@winner)].visual_effect :fade app/views/winners/destroy.js.rjs:1:in `_run_rjs_app47views47winners47destroy46js46rjs' app/views/winners/destroy.js.rjs:1:in `_run_rjs_app47views47winners47destroy46js46rjs' Rendered rescues/_trace (137.1ms) Rendered rescues/_request_and_response (0.3ms) Rendering rescues/layout (internal_server_error)

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  • Only one instance of a scriptmanager can exist on a page

    - by dotnetdev
    Hi, I design an ASP.NET web usercontrol and with a maskeditor and scriptmanager, I always get an object reference not set to an instance of an object exception at runtime. Stacktrace is: [InvalidOperationException: Only one instance of a ScriptManager can be added to the page.] System.Web.UI.ScriptManager.OnInit(EventArgs e) +384613 System.Web.UI.Control.InitRecursive(Control namingContainer) +333 System.Web.UI.Control.InitRecursive(Control namingContainer) +210 System.Web.UI.Control.InitRecursive(Control namingContainer) +210 System.Web.UI.Control.InitRecursive(Control namingContainer) +210 System.Web.UI.Control.InitRecursive(Control namingContainer) +210 System.Web.UI.Control.InitRecursive(Control namingContainer) +210 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +378 What causes this? Thanks

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  • select option clears when page loads in php

    - by user79685
    Hey guys, the scenario is this: see select below <form name="limit"> <select name="limiter" onChange="limit(this.value)"> <option selected="selected">&nbsp;</option> <option value="5">5</option> <option value="10">10</option> <option value="15">15</option> </select> </form> I want whenever any option is selected for 3 things to happen: 1.) js limit() function is called which all it does its takes current url, adds new query parameter 'limit' with the user selected value eg: http://localhost/blahblah/apps/category.php?pg=1&catId=3021&limit=5 (this will cause the category.php page to be hit and # of product displayed limited to the value selected by user) 2.)Once the url is hit, it reloads but i DONT want the value selected to reset back to the default (which it currently does). I want it to reflect the users selection after page reload. 3.) Also, when i move to the next page (pagination), i would like the state to be carried ova to the next page (ie. remembering the user selection).

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  • jQuery, Quotes, characters etc are breaking my JSON

    - by nobosh
    I'm using json2.js to create a JSON object which JQUERY posts to the Server. The object looks like: [{"locationID":"16","locationDesc":"XXXX"}, {"locationID":"111","locationDesc":"XXXX"}, {"locationID":"12","locationDesc":"XXXX"}, {"locationID":"11","locationDesc":"XXXX"}] Problem here is that XXXX sometimes contains quotes like "we're'" etc.... How should I handle this? Do you I escape somewhere or encode in some way? Thanks

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  • ScriptManager duplicates javascript

    - by Andreas
    Hi! I have a usercontrol that can be used in for example a gridview itemtemplate, this means that the control might or might not be on the page at page load. In the case where the control is inside an itemtemplate i will popupate the gridview via asyncronous postbacks (via updatepanels). The control itselfs registrers scriptblocks since it is depending on javascripts. First i used Page.ClientScript.RegistrerClientScriptBlock But this doesn't work on asyncronous postbacks (updatepanels) so i then tried the same using ScriptManager which allows me to registrer scripts on the page after async postbacks. great!. ScriptManager.RegisterClientScriptBlock However, ScriptManager (what i know of) does not have the functionallity to see if a script already is on the page, so i will for every postback generate duplicates of the script blocks, this is ofcourse unwanted behaviour. I did a run at Google and found that i can call the Dispose() method of the PageRequestManager can be used, this does work since it clears the scripts and then adding them again (this also solves my issue with removing unused script blocks from removed controls). Sys.WebForms.PageRequestManager.getInstance().Dispose() However, ofcourse there is a downside since im posting here :). The Dispose() method disposes the instance on the master page as well which leads to scripts running there will stop to function after an async postback (updateprogress for example). So, is there a way to check if a script already exists on the page using ScriptManager or any other tools, that will prevent me of inserting duplicate scripts? Also, is there a way to remove certain script blocks (when i am removing an item in itemtemplate for example). Big thanks in advance.

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  • Implement a calender with Ruby and Javascript in Rails

    - by samuel02
    I'm trying to implement a calendar with Ruby and Javascript in Rails. I'm using a calendar helper that creates a calendar with given year and month and events as parameters (<%= calendar(:year => 2012, :month => 4, :events => @events %>). I also have three buttons next, today and previous with which the user should be able to navigate the calendar with. I am also going to implement some js that makes it possible to select dates in the calendar. So what I would like to do is to insert the calendar in the DOM with javascript in order to generate a new calendar when the user clicks one of the buttons. That way I will be able to control the behavior of the buttons and add the select functionality. The problem is that I can't just insert my erb code in a javascript plus I'm not even sure it's the right way to go? Any suggestions are appreciated!

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  • Multiple task in one page?(php - mysql - jquery)

    - by python
    My goal is to build an application in a page that can be use multiple task(crud) for example in this html code.there are multiple submit,multiple action in the same page after (user submit (CURD) it will load result table below.) In juery how Can I do this.? <script type="text/javascript" src="jquery.js"></script> <script> $(document).ready(function(){ $("#button1").click(function(){ $('form#crudform').attr({action: "script_1.php"}); $('form#crudform').submit(); }); $("#button2").click(function(){ $('form#crudform').attr({action: "script_2.php"}); $('form#crudform').submit(); }); $("#button3").click(function(){ $('form#crudform').attr({action: "script_3.php"}); $('form#crudform').submit(); }); }); </script> Form CRUD: <form id="crudform" method="post"> <p>Name: <input type="text" name="name"/></p> <p>Age: <input type="text" name="age"/></p> <input type="button" id="button1" value="Cancel" /> <input type="button" id="button2" value="Save" /> <input type="button" id="button3" value="Update" /> </form> Result: <form id="result" method="post"> <table border="1"> <tr> <tr><td></td><td>Name</td><td>Age</td> </tr> <tr><td><input type="checkbox" name="name1"></td><td>Name1</td><td>10</td><tr> <tr><td><input type="checkbox" name="name1"></td><td>Name2</td><td>15</td></tr> <tr><td><input type="checkbox" name="name3"></td><td>Name3</td><td>16</td></tr> </table> <input type="button" id="button4" value="change" /> <input type="button" id="button5" value="drop" /> </form> Anybody know the tutorials relating ..with my tasks.or tips,guide.....are welconme :)

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  • Custom server control disappears from page when UpdatePanel updates

    - by Sasha
    Hi all. I created a custom asp.net server control. It works fine on a regular asp.net page and as a DOM object inside of the browser. But I've never used the UpdatePanel before and now I'm trying to make sure that this control works there as well. It doesn't. If I add my control to the page outside of an update panel and click some panel's inside button (trigger), everything works fine. But if I place my control inside of update panel and click that button again, the control "disappears" from the page completely. I still can see my control in javascript debugger and the update, meaning that the object itself is still in DOM. It looks like the panel just "hides" the outer div element of my control for some reason. I tried to call panel's Update() method on button click handler, set panel's UpdateMode to both Conditional and Always. All with the same result. How can I fix that? Thank you!

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  • Online webcam chat. Free server and easy-to-implement client?

    - by Oskar Kjellin
    I have a client requesting that his users can use their webcams to talk to each other. From what I've understood the main thing to use for this is Flash. However as I have not written flash I would like to have something really easy to implement. Of course preferrably free (or trial). The idea of this is that everything but the chat alone is in .net. So the users will not use flash until they are actaully going to talk to each other. So there is no use for rooms here. I've been looking into silverlight some as well. But it seems like silverlight does not offer streaming between users..? I know this question has been asked many times here. But I could not find a suitable answer which is why I post a new question.

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  • Calling a web service from javascript and .net 2.0

    - by rod
    Hi All, Is it possible to call a web service (on my localhost) from jquery in a plain html page inside an asp.net 2.0 application? <script type="text/javascript"> $(document).ready(function(){ $('#button1').click(function(){ $('#targetDiv').load('http://localhost/testservice/Service1.asmx/HelloWorld',null,function(){alert('test')}); }); }); </script> I'm getting a 500 error? Not sure if it's even possible to do this way? thanks, rod

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  • javascript to determine if page on remote domain has changed

    - by uku
    Hi, I am trying to find a client-side way to determine if a page on a remote domain has changed. I can't load the page in an iframe and examine its contents due to same origin policy. So I tried using .getResponseHeader("Content-Length") and .getResponseHeader("Last-Modified") but apparently these are also restricted by SOP even though FireBug shows Content-Length in the console. Is there a way to do this? I just need a way to know if the page has changed. Thx

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  • how to give 2 parameters to remote_function thanks to 'with' ???

    - by bahamut100
    Hi, I try to give a lot of parameters in a remote_function like this : <?php echo remote_function(array( 'update' => 'test', 'url' => 'conges/verifdate', 'with' => "'date_deb=' + $('date_debut').value" )); ?> This code works, in my action.class I can to get the parameter. But when I try to give a second parameter, it doesn't work : <?php echo remote_function(array( 'update' => 'test', 'url' => 'conges/verifdate', 'with' => "'date_deb=' + $('date_debut').value"."'+&date_fin=' + $('date_fin')" )) ?> Why ??

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  • Using JSON Data to Populate a Google Map with Database Objects

    - by MikeH
    I'm revising this question after reading the resources mentioned in the original answers and working through implementing it. I'm using the google maps api to integrate a map into my Rails site. I have a markets model with the following columns: ID, name, address, lat, lng. On my markets/index view, I want to populate a map with all the markets in my markets table. I'm trying to output @markets as json data, and that's where I'm running into problems. I have the basic map displaying, but right now it's just a blank map. I'm following the tutorials very closely, but I can't get the markers to generate dynamically from the json. Any help is much appreciated! Here's my setup: Markets Controller: def index @markets = Market.filter_city(params[:filter]) respond_to do |format| format.html # index.html.erb format.json { render :json => @market} format.xml { render :xml => @market } end end Markets/index view: <head> <script type="text/javascript" src="http://www.google.com/jsapi?key=GOOGLE KEY REDACTED, BUT IT'S THERE" > </script> <script type="text/javascript"> var markets = <%= @markets.to_json %>; </script> <script type="text/javascript" charset="utf-8"> google.load("maps", "2.x"); google.load("jquery", "1.3.2"); </script> </head> <body> <div id="map" style="width:400px; height:300px;"></div> </body> Public/javascripts/application.js: function initialize() { if (GBrowserIsCompatible() && typeof markets != 'undefined') { var map = new GMap2(document.getElementById("map")); map.setCenter(new GLatLng(40.7371, -73.9903), 13); map.addControl(new GLargeMapControl()); function createMarker(latlng, market) { var marker = new GMarker(latlng); var html="<strong>"+market.name+"</strong><br />"+market.address; GEvent.addListener(marker,"click", function() { map.openInfoWindowHtml(latlng, html); }); return marker; } var bounds = new GLatLngBounds; for (var i = 0; i < markets.length; i++) { var latlng=new GLatLng(markets[i].lat,markets[i].lng) bounds.extend(latlng); map.addOverlay(createMarker(latlng, markets[i])); } } } window.onload=initialize; window.onunload=GUnload;

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  • How to create updateable panel using AjaxLink of Wicket?

    - by Arne
    I try to realize a link (in fact many links) that update a table in an website using an AjaxLink of Wicket. But I fail, the table is never updated (I have "setOutputMarkupId(true)" and call "addComponent", but there must be something other thats wrong). How can I realize a panel with a number of links and a table that displays dynamic data, dependent on the link clicked? Can someone give an example (Maybe two links, when the first one is clicked the table displays two random numbers from 1-10, when the second is clicked the table displays random numbers from 1-100)? Without reloading the entire page, but only the html for the table?

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  • jquery tabs changing on change?

    - by Steven
    Hello, I have two tabs each with different styles and different text. One recent posts and one recent comments the css for each are below with the ones I need to have when they are selected. So pretty much when a user selects the recent comments it will change the entire block to the second one (2). Pretty much changing width, and swapping the css for both tabs. I am currently using idtabs http://www.sunsean.com/idTabs/ My question: How can I have it change the tab css and width for both when the right tab is selected and then back again when the left tab is selected. CSS sideboxtopleft { float: left; width: 121px; height:20px; background-image: url(images/categorysplitter.gif); background-position:top right; background-repeat:no-repeat; text-align: center; padding-top: 10px; margin: 0; } sideboxtopleft2 { float: left; width: 173px; height:20px; background-image: url(images/categorysplitter.gif); background-position:top right; background-repeat:no-repeat; text-align: center; padding-top: 10px; margin: 0; } sideboxtopright { float: right; width: 173px; height: 20px; background-image:url(images/categorybg.gif); text-align: center; padding-top: 10px; margin: 0; } sideboxtopright2 { float: right; width: 121px; height: 20px; background-image:url(images/categorybg.gif); text-align: center; padding-top: 10px; margin: 0; } HTML <div id="sidebox" style="padding: 0px; width:294px;"> <div class="idTabs"> <div id="sideboxtopleft"> <a href="#post"><h3>RECENT POSTS <img src="images/arrow.gif" width="9" height="5" alt="v" border="0" /></h3></a> </div> <div id="sideboxtopright"> <a href="#comments"><h3>RECENT COMMENTS <img src="images/arrow2.gif" width="6" height="9" alt=">" border="0" /></h3></a> </div> </div> <div style="padding: 10px;"> <div id="post"> SUP? </div> <div id="comments"> SUP?>>!?>!! </div> </div> </div> <div id="sidebox" style="padding: 0px; width:294px;"> <div class="idTabs"> <div id="sideboxtopleft2"> <a href="#post2"><h3>RECENT COMMENTS <img src="images/arrow.gif" width="9" height="5" alt="v" border="0" /></h3></a> </div> <div id="sideboxtopright2"> <a href="#comments2"><h3>RECENT POSTS <img src="images/arrow2.gif" width="6" height="9" alt=">" border="0" /></h3></a> </div> </div> <div style="padding: 10px;"> <div id="post2"> SUP? </div> <div id="comments2"> SUP?>>!?>!! </div> </div> </div>

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  • Resetting a partial using RJS, and passing an instance variable?

    - by Elliot
    Hey guys here is my code (roughly): books.html.erb <% @books.each do |book| %> <% @bookid = book.id %> <div id="enter_stuff"> <%= render "input", :bookid => @bookid %> </div> <%end%> _input.html.erb <% @book = Book.find_by_id(@bookid) %> <strong>your book is: <%=h @book.name %></strong> create.rjs page.replace_html :enter_stuff, :partial => 'input2', :object => @bookid Only create.js doesn't seem to work though, if instead of passing the partial I passed "..." it does work, so I know its that there are instance variables in the partial that aren't being reset. Any ideas?

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  • how to control radiobutton from textfield

    - by klox
    i want after i type "0203-ED" in textfield ...two character behind that text can control the radio button.. "ED" character from that text can make one radiobutton which has value="ED" are checked... what script that can make it work??

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  • Looking for Opinions and Sugestions on my Website. (General Question)

    - by MrEnder
    I am looking for general opinions and suggestions about the site in whole. Its ok I don't mind hearing where I went wrong on anything. I'm still learning. All tips and pointers on any subject relating are highly welcome. If you are going to make a suggestion and post a snippet or code please explain how it works in detail. The site was design as a interface to display the labs I have to do in my college (the labs are all basic things that I'm way beyond). So I decided to take it all to the next level with this. The link is http://opentech.durhamcollege.ca/~intn2201/brittains/labs/ It is 100% designed by me with the exception of the icons. (I could not think of anything better to draw) There is no specific area of the site I want suggestions or opinions on this is a general question. You may answer about the site in whole or an area of the coding just please specify. If you have any questions related to my site or code you may ask them as well. Thank you for your time and any comments Shelby

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  • How do I update a webpage with the progress of a server-side task?

    - by Jim B
    Hi everyone, I'm working on a web project that takes the results from a survey type application, and runs them through a bunch of calculations to come up with some recommended suggestions for the user. Now, this calculation might take a minute or so, so I'd like to be able to give the user some update on it's progress. Obviously, the quick and dirty solution would be to put up a message along the lines of "Please wait while we calculate your recommendations" with a spinning gear type graphic. (or whatever, you get the point..). Once the task completes, I'd redirect to the results page. However, I'd like to do something a little more flashy. Maybe something along the lines of a progress bar, and even prompt the user with what's going on in the background. For example, give them a progress bar, with some text that says "Now processing suggestion 3 of 15; Multi-Vitamin" Any suggestions on how I could set this up? One way I'm thinking of doing it is to write the progress of the calculation method to the HttpContext, and slap up an update panel and timer that would show/refresh this info. I've also checked out maybe building a web service/method, and then poll that at some interval. Has anybody done something similar to this before? What worked for you? Thanks again! ~Jim

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