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  • How do I Capture native (Menu) button presses in PhoneGap?

    - by Dinedal
    By calling "BackButton.override();" and then hooking on to the backKeyDown event, I am able to get the back button press to register. But there doesn't appear to be a "MenuButton.override();" Also, hooking on the menuKeyDown doesn't register a button press. Here's my (non-functional) code. What am I missing? <script type="text/javascript" charset="utf-8" src="phonegap.js"></script> <script type="text/javascript" charset="utf-8"> document.addEventListener("deviceready", function() { alert('initialized'); }, false); document.addEventListener("menuKeyDown", function() { alert('menu_pressed'); // Never happens }, false); </script>

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  • jquery for loop on click image swap

    - by user2939914
    I've created a for loop of images. I would like each image to swap with another image on click individually. Here's the jQuery I've written so far: for ( var i = 1; i < 50; i++) { $('article').append('<div class="ps-block" id="' + i + '"><img src="img/bw/' + i + 'bw.png"></div>'); } $('img').click(function() { var imgid = $(this).attr('id'); $(this).attr("src", "img/color/" + imgid + ".png"); }); I also attempted to use this code inside the for loop after the append, but i ends up returning 50 every time you click since the loop has already ran: $('img[src="img/bw/' + i + 'bw.png"]').click(function() { $(this).attr("src", "img/color/" + this.id + ".png"); }); Thanks!

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  • Auto refresh of page in Rails 3 using javascript

    - by teknull
    I have a view in my rails app: blah.app/units/status This displays a status of all my units. I'd like to have the page automatically refresh via javascript but I'm not sure how to do it. I tried writing this but it doesn't reload: <script> $(function() { setInterval(function(){ $.getScript("/units/status"); }, 10000); }); </script> Can someone point out where I'm going wrong here?

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  • Display x if x display y if y (bad title I know)

    - by user1914940
    Ok so after reading the title you are most likely like...what? Ok, so I have a jquery code that displays input box if an item with prefix Blue from dropdown menu is selected. Code: $(function() { $('#text1').hide(); $('#select2').on('change', function(event) { var opt = this.options[ this.selectedIndex ]; var picked_blue = $(opt).text().match(/Blue/i); if(picked_blue) { $('#text1').show(); } else { $('#text1').hide(); } }); }); But what I also need to add is to display something else if any other item from dropdown menu is selected.

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  • How can I delete a row in the view only if the AJAX call & db deletion was successful?

    - by user1760663
    I have a table where each row has a button for deletion. Actually I delete the row everytime without checking if the ajax call was successfull. How can I achieve that, so that the row will only be deleted if the ajax call was ok. Here is my clickhandler on each row $("body").on('click', ".ui-icon-trash" ,function(){ var $closestTr = $(this).closest('tr'); // This will give the closest tr // If the class element is the child of tr deleteRowFromDB(oTable, closestTr); $closestTr.remove() ; // Will delete that }); And here my ajax call function deleteRowFromDB(oTable, sendallproperty){ var deleteEntryRoute = #{jsRoute @Application.deleteConfigurationEntry() /} console.log("route is: " + deleteEntryRoute.url) $.ajax({ url: deleteEntryRoute.url({id: sendallproperty}), type: deleteEntryRoute.method, data: 'id=' + sendallproperty });

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  • Is there a way to keep track of javascript hits?

    - by user54197
    I am populating a table based on a javascript function. I want to limit the data entered to 2, afterwhich I hide the table. Is there a way to track how many hits the javascript code gets hit? function addNewRow() { $('#displayInjuryTable tr:last').after('<tr><td style="font-size:smaller;" class="name"></td><td style="font-size:smaller;" class="address"></td></tr>'); var $tr = $('#displayInjuryTable tr:last'); var propertyCondition = $('#txtInjuryAddress').val(); $tr.find('.name').text($('#txtInjuryName').val()); if (propertyCondition != "") { $tr.find('.address').text($('#txtInjuryAddress').val() + ', ' + $('#txtInjuryCity').val() + ' ' + $('#txtInjuryState').val() + ' ' + $('#txtInjuryZip').val()); }

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  • XMLHttpRequest.status always returning 0

    - by Michael
    html <a href="#" onclick="MyObj.startup()">click me</a> js code var MyObj = { startup : function() { var ajax = null; ajax = new XMLHttpRequest(); ajax.open('GET', 'http://www.nasa.gov', true); ajax.onreadystatechange = function(evt) { if(ajax.readyState == 4) { if (ajax.status == 200) { window.dump(":)\n"); } else { window.dump(":(\n"); } } } ajax.send(null); } } ajax.status always returning 0, no matter which site it is, no matter what is the actual return code. I say actual, because ajax.statusText returning correct value, eg OK or Redirecting... ajax.readyState also returns proper values and 4 at the end.

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  • What is an alternative to eval in this situation?

    - by CppLearner
    Many of my view functions do similar things. For the most part, they reverse to a different views upon clicking a button / a text link. So I wrote a helper function render_reverse def render_reverse(f, args): # args are all string type return eval('reverse(' + f + ', ' + args + ')' ) eval is a bad practice, and is pretty slow. It takes 3 seconds to start redirecting, whereas calling reverse directly takes less than 1 second to start redirecting. What alternative do I have? By the way, the function above doesn't work properly. I was modelling after this line (which works) eval('reverse("homepage", args=["abcdefg"])') Thanks.

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  • Checking for multiple images loaded

    - by Stanni
    Hi, I'm using the canvas feature of html5. I've got some images to draw on the canvas and I need to check that they have all loaded before I can use them. I have declared them inside an array, I need a way of checking if they have all loaded at the same time but I am not sure how to do this. Here is my code: var color = new Array(); color[0] = new Image(); color[0].src = "green.png"; color[1] = new Image(); color[1].src = "blue.png"; Currently to check if the images have loaded, I would have to do it one by one like so: color[0].onload = function(){ //code here } color[1].onload = function(){ //code here } If I had a lot more images, Which I will later in in development, This would be a really inefficient way of checking them all. How would I check them all at the same time?

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  • Read options from file

    - by Devel
    I would like to write a function which will read values from a text file and write them to variables. For example my file is: mysql_server localhost mysql_user root mysql_passworg pospaz mysql_database testgenerator log log.txt username admin password abcd and I have the same variables as the first word in the line. So how to make the function read data from file and do sth like this: char *mysql_server = localhost; char *mysql_user = root; ... I have no idea even how to start writing it...

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  • [JQuery] Edit Css with animation effect

    - by Pennywise83
    Hi, I've a div in a absolute position with a default "top" value set to "-200px". When i click on the div the "top" value is updated to "0". In this way I see the entire Div. This is the js: $(document).ready(function(){ $("#search_bar").click(function () { $(this).css("top","0"); }); }); Is there a way to achieve this result but with an animation? For example, a slide down effect? Also, when i click another time to the div I'd like that the "top" value will be restored to "-200px".

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  • Python finding n consecutive numbers in a list

    - by lost_in_code
    I want to know how to find if there is a certain amount of consecutive numbers in a row in my list e.g. For example if I am looking for two 1's then: list = [1, 1, 1, 4, 6] #original list list = ["true", "true", 1, 4, 6] #after my function has been through the list. If I am looking for three 1's then: list = [1, 1, 1, 4, 6] #original list list = ["true", "true", "true", 4, 6] #after my function has been through the list. I have tried: list = [1, 1, 2, 1] 1,1,1 in list #typed into shell, returns "(1, 1, True)" Any help would be greatly appreciated, I mainly would like to understand whats going on, and how to check if the next element in the list is the same as the first x amount.

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  • R: Change the fields' (slots') values of the class assigning a value to some other field

    - by Max Li
    Assgning a value to one field, how can I make the other fields changing. Consider the following R5 class C<-setRefClass("C", fields=list(a="numeric",b="numeric") , methods=list( seta = function(x){ a<<-x b<<-x+10 cat("The change took place!") } ) # end of the methods list ) # end of the class Now create the instance of the class c<-C$new() This command c$seta(10) will result in that c$a is 10 and c$b is 20. So it actually works, however, I want to achieve this result by the command c$a<-10 (i.e. after that I want c$b to be equal to 20 as defined in the class in the logic of seta() function) How can I do it?

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  • a macro question for c language (#define)

    - by Daniel
    I am reading source code of hoard memory allocator, and in the file of gnuwrapper.cpp, there are the following code #define CUSTOM_MALLOC(x) CUSTOM_PREFIX(malloc)(x) What's the meaning of CUSTOM_PREFIX(malloc)(x)? is CUSTOM_PREFIX a function? But as a function it didn't defined anywhere. If it's variable, then how can we use variable like var(malloc)(x)? more code: #ifndef __GNUC__ #error "This file requires the GNU compiler." #endif #include <string.h> #include <stdlib.h> #include <stdio.h> #include <malloc.h> #ifndef CUSTOM_PREFIX ==> here looks like it's a variable, so if it doesn't define, then define here. #define CUSTOM_PREFIX #endif #define CUSTOM_MALLOC(x) CUSTOM_PREFIX(malloc)(x) ===> what's the meaning of this? #define CUSTOM_FREE(x) CUSTOM_PREFIX(free)(x) #define CUSTOM_REALLOC(x,y) CUSTOM_PREFIX(realloc)(x,y) #define CUSTOM_MEMALIGN(x,y) CUSTOM_PREFIX(memalign)(x,y)

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  • Finding all properties of a javascript class

    - by uzay95
    I have classes looks like below: function Student(name, surname, lossons){ this.Name = name; this.Surname = surname; this.Lessons = lessons; } function Lesson(){ this.Name = name; this.studentCount = count; } And i want to write ToString method to them. But i don't want to write and add them one by one. Is there any way to do this like reflection in C# or Java ? Any help would be appreciated...

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  • how do I get the form data in a javascript object so I can send it as the data parameter of an $.aja

    - by user281180
    How to return json after form.submit()? <form id="NotificationForm" action="<%=Url.Action("Edit",new{Action="Edit"}) %>" method="post" enctype="multipart/form-data" onsubmit='getJsonRequestAfterSubmittingForm(this); return false;'> <%Html.RenderPartial("IndexDetails", Model);%> </form> $.ajax({ url: '<%=Url.Action("Edit","Notification") %>', type: "POST", dataType: 'json', data: $("#NotificationForm").submit(), contentType: "application/json; charset=utf-8", success: function(result) { if (result.Result == true) { alert("ghjghsgd"); } }, error: function(request, status, error) { $("#NotSelectedList").html("Error: " & request.responseText); } });

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  • regular expression

    - by Altariste
    Hi, I need to find all invocations of some logging macros in the code. The macro invocation is of the form: DEBUG[1-5] ( "methodName: the logged message", arguments) But the new versions of the macros are prepending the name of the method automatically, so my task is to write a Python script that will remove the duplicate function names specified already by the programmer. I'm using the sub function from the re module. I plan to substitute the part indicated by || signs below : ||DEBUG[1-5] ("methodName: || the logged message", arguments) with simply DEBUG[1-5](" The problem is following: To find the expressions I want to substitute, I use the following regular expression: ((DEBUG | INFO | all other macros names )[1-5]*)\s*\(\"\w+: But it doesn't match the whole expression ( from DEBUG right to the colon ), but only the macro name, that is for example DEBUG5. Is my expression wrong or there is some quirk in the Python regex processing? ( maybe the fact that I use the DEBUG[1-5] as a subgroup has something to do with this? ) Help from anyone more knowledgable than me appreciated :).

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  • Using Jquery 1.8.0 return false is not breaking an each() loop

    - by user1879729
    Here is the script I am using. $('.row').each(function(){ $(this).each(function(){ if($(this).find('.name').val()==""){ $(this).find('.name').val(data.name); $(this).find('.autonomy').val(data.autonomy); $(this).find('.purpose').val(data.purpose); $(this).find('.flow').val(data.flow); $(this).find('.relatedness').val(data.relatedness); $(this).find('.challenge').val(data.challenge); $(this).find('.mastery').val(data.mastery); $(this).find('.colour').val(data.colour); done=true; } if(done==true){ alert("here"); return false; } }); }); It just seems to totally ignore the return false and I can't seem to work out why!

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  • Setting Hyperlink to a Javascript Url (using the DataNavigateUrlFormatString property)

    - by Jangwenyi
    I have an issue where my Hyperlink field in Asp.net GridView is not accepting Javascript function that will open a popup dialog. I am using the following snippet <asp:GridView .... . . <asp:HyperLinkField DataTextField="SomeColumn" HeaderText="Some Column Text" SortExpression="SomeColumn" HeaderStyle-HorizontalAlign="Left" DataNavigateUrlFormatString="javascript:LaunchSomePopupdialog({0})" DataNavigateUrlFields="Id" ItemStyle-Font-Underline="true"> . . </asp:GridView> However, when I use a page url, it works: E.g. DataNavigateUrlFormatString="~/SomeOtherPage.aspx?Id={0}" Is there a way I can make this work with my Javascript function?

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  • Hide and Show content based on Cookie value

    - by danit
    Here is my Jquery: $("#tool").click(function() { $(".chelp").slideToggle(); $("wrapper").animate({ opacity: 1.0 },200).slideToggle(200, function() { $("#tool img").toggle(); }); }); When you click #tool img #wrapper is hidden along with .chelp. I need to control this with a cookie, so when the user hides #wrapper it remains hidden on all pages or when they re-visit the page. I know there is a jQuery Cookie plugin, but I'd like to do this with plain Javascript rather then including another plugin. Can anyone tell me how i can build in it in plain javascript and merge with the JQuery to create a cookie, then check the cookie each time the page loads to see if #wrapper should be hidden or displayed?

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  • JQuery Calculator not working

    - by user2798091
    I am trying to build a tile calculator but can't seem to get the following code to work: JQuery: $(document).ready( function caculateForm() { var length = document.getElementById('length').value; var width = document.getElementById('width').value; var size = document.getElementById('size').value; var compute = (length * width) / (size / 100); var total = compute * 100; var allowance = (compute * 100) * .10; allowance = Math.floor(total) + Math.floor(allowance + 1); document.getElementById('total').value = Math.floor(total); document.getElementById('allowance').value = allowance; } }); $(document).ready( function clearFileInput(id) { var elem = document.getElementById(id); elem.parentNode.innerHTML = elem.parentNode.innerHTML; } }); Here is my jsfiddle

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  • How can I define a one-time event so that new handlers fire (once) even after the event has already occurred?

    - by harpo
    You know how this $(function() { ... }); will fire whether or not the "document ready" event has already occurred? I want to define an event like that. That event is a special case in jQuery. I'm wondering if a custom event can behave in the same way, using only the standard event mechanisms. Ideally, I'd like to be able to define handlers in the "normal" way: $(document).on("init.mything", function() { ... }); This works now if the above runs before init.mything is triggered. But if it doesn't, then the handler never runs. What makes this tricky is, I don't want to assume anything except that jQuery has loaded. Any ideas?

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  • Isotope active class when using select menu

    - by Michael
    I am using Metafizzy's Isotope plugin and have it set up to filter using a select menu as seen here: http://jsfiddle.net/trewknowledge/jJZEN/ $(function() { var $container = $('#container'), $select = $('#filters select'); $container.isotope({ itemSelector: '.item' }); $select.change(function() { var filters = $(this).val(); ; $container.isotope({ filter: filters }); }); });? What I am trying to figure out is how I would add a highlight/active class to the selected elements when the filters variable is already being used.

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  • KineticJS issue with repeatable mouse event

    - by nuclearpeace
    I have noob issue here (i obviously missing something). I simplified it from my bigger application: When i click blue rectangle, i add another layer to the stage that includes red rectangle (clickable), when i clik this red rectangle it removes second layer with red rect. Problem: When i click blue rect second time, nothing happens :( i.e. app works only once, and i need to add/remove second layer(with red rect) repeatedly. What's wrong? :) You can see it here, Fiddle http://jsfiddle.net/mAX8r/ Code: <!DOCTYPE HTML> <html> <head> <style> body { margin: 0px; padding: 0px; } canvas { border: 1px solid #9C9898; } </style> <script src="http://www.html5canvastutorials.com/libraries/kinetic-v4.0.3.js"> </script> <script> window.onload = function() { var stage = new Kinetic.Stage({ container: 'container', width: 578, height: 200 }); var layerBlue = new Kinetic.Layer(); var layerRed = new Kinetic.Layer(); var rectBlue = new Kinetic.Rect({ x: 100, y: 75, width: 100, height: 50, fill: 'blue', stroke: 'black', strokeWidth: 4 }); var rectRed = new Kinetic.Rect({ x: 300, y: 75, width: 100, height: 50, fill: 'red', stroke: 'black', strokeWidth: 4 }); // mouse events rectBlue.on('click', function() { stage.add(layerRed); stage.draw(); }); rectRed.on('click', function() { layerRed.remove(); stage.draw(); }); // add the shape to the layer layerBlue.add(rectBlue); layerRed.add(rectRed); // add the layer to the stage stage.add(layerBlue); }; </script> </head> <body> <div id="container"></div> </body> </html>

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