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• unable to cope with the asynchronous nature of navigator.geolocation.

  - by Raja

  Hi all I'm using the navigator.geolocation.getCurrentPosition(function) api in firefox 3.6. When i try to call this method repeatedly I see that sometimes it works and sometimes it doesn't. I figured that the problem is because of its asynchronous callback nature. I can see that the callback function is being called at some point but my outer function is already exiting so i cannot catch the values of the position coordinates. I'm pretty new to javascript so i'm assuming other javascript coders might have already figured out how to deal with it. Please help. Thanks

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• Javascript dispatchEvent

  - by xpepermint

  Hey... I'm using Flash a lot and my classes uses EventDispatcher class which allowes me to define custom events of a class. How can I do this in javascript. I would like to do something like this: var MyClass = function() { }; MyClass.prototype = { test : function() { dispatchEvent('ON_TEST'); } }; var mc = new MyClass(); mc.addEventListener('ON_TEST', handler); function handler() { alert('working...') } How is this posible with Javascript?

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• PHP + GD: imagetruecolortopalette not keeping transparency

  - by AlexMax

  I am using GD to output an image that is a truecolor+alpha channel PNG file using imagepng just fine. However, I would like to have the ability to also output an ie6-compatible 256-color PNG as well. According to the official documentation for imagetruecolortopalette: The code has been modified to preserve as much alpha channel information as possible in the resulting palette, in addition to preserving colors as well as possible. However, I am finding that the results of this function do not properly preserve any transparency at all. I used this firefox image with text superimposed on top of it as a test, and all the function did was give me a white background and a weird dark blue border. I know that I can't hope to preserve the full alpha channel, but surely this function would at least pick up on the transparent background. Is there something I'm missing? Are there any alternative approaches that I can take?

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• extjs4 display tooltip on button click instead of mouse hover

  - by user856753

  I am trying to add a on click listener to the below tooltip. I do not want the tooltip to display on mouse hover. Instead it need it show on button click. Do I have to add a handler function inside a listener? { xtype: 'button', cls:'my-btn', iconCls:'question', src:'../www/css/slate/btn/question.png', padding: '5 0 0 0', listeners: { render: function(cmp) { Ext.create('Ext.tip.ToolTip', { closable:true, hideDelay : 3000, padding: '0 0 0 0', maxWidth:400, width:800, target: cmp.el, html: "<b>read-only</b>:Users will have read only access to all pages", getTargetXY: function() { return [810, 340]; } }); } } },

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• Need to autosave TinyMCE

  - by BFTrick

  Hello, I am looking for some help autosaving tinyMCE. I want to save the content within tiny into its respective textarea after content has been updated. So that when I make an ajax call the content is in the textarea ready to be posted. Currently I have this little bit of code but it only updates the text area when you press a button in tiny (like bold, italics, underline, etc). I also have the link where I found the code. Any help would be appreciated. $('.AjaxEdit textarea.tiny').tinymce({ //other init options //need this function to save tiny data before Ajax call //http://www.webmasterkitchen.com/article/tinymce-ajax-form-submission/ setup : function(ed) { ed.onChange.add(function(ed) { tinyMCE.triggerSave(); }); } });

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• Does bash have a hook that is run before executing a command?

  - by Gilles

  In bash, can I arrange for a function to be executed just before running a command? There is $PROMPT_COMMAND, which is executed before showing a prompt, i.e., just after running a command. Bash's $PROMPT_COMMAND is analogous to zsh's precmd function; so what I'm looking for is a bash equivalent to zsh's preexec. Example applications: set your terminal title to the command being executed; automatically add time before every command.

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• Completion block not being called. How to check validity?

  - by HCHogan

  I have this method which takes a block, but that block isn't always called. See the method: - (void)updateWithCompletion:(void (^)(void))completion { [MYObject myMethodWithCompletion:^(NSArray *array, NSError *error) { if (error) { NSLog(@"%s, ERROR not nil", __FUNCTION__); completion(); return; } NSLog(@"%s, calling completion %d", __FUNCTION__, &completion); completion(); NSLog(@"%s, finished completion", __FUNCTION__); }]; } I have some more NSLogs inside completion. Sometimes this program counter just blows right past the call to completion() in the code above. I don't see why this would be as the calling code always passes a literal block of code as input. If you're curious of the output of the line containing the addressof operator, it's always something different, but never 0 or nil. What would cause completion not to be executed?

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• Adding row to DataGridView from Thread

  - by she hates me

  Hello, I would like to add rows to DataGridView from two seperate threads. I tried something with delegates and BeginInvoke but doesn't work. Here is my row updater function which is called from another function in a thread. public delegate void GRIDLOGDelegate(string ulke, string url, string ip = ""); private void GRIDLOG(string ulke, string url, string ip = "") { if (this.InvokeRequired) { // Pass the same function to BeginInvoke, // but the call would come on the correct // thread and InvokeRequired will be false. object[] myArray = new object[3]; myArray[0] = ulke; myArray[1] = url; myArray[2] = ip; this.BeginInvoke(new GRIDLOGDelegate(GRIDLOG), new object[] { myArray }); return; } //Yeni bir satir daha olustur string[] newRow = new string[] { ulke, url, ip }; dgLogGrid.Rows.Add(newRow); }

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• Dynamically add new HTML elements on page load after getting JSON data from Web API

  - by Luis D Urraca

  I'm building an hybrid Android App using Phonegap/Apache Cordova. My app should get data from my web api. I'm using JSON to serve the data to the APP. So i got a the following code: function init() { document.addEventListener('deviceready', onDeviceReady, false); var url = "http://23.21.128.153:3000/regions.json";var jsonresults; $.getJSON(url,function(data){ jsonresults = data; $.each(jsonresults, function(i,v){ $('#main-content').append('<li>'+jsonresults[i].name+'</li>'); }); }); } and also on the body of the html i have a div called main-content. Everythings works fine in the Eclipse browser, but on the Android Emulator is not working. Not sure if there's another way to pull data from Web API using JSON and dinamically create HMTL elements after getting the data. https://gist.github.com/2956660

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• jQuery plugin .fn question

  - by user319342

  Hello, I seem to be having some problems creating a jquery plugin. I am testing a simple plugin in firebug console and the function is not being defined as I would expect. Here is the code pattern I am using jQuery.fn.test = function () {console.log("runs")} I am trying to call the function with this call which is not working. $.test() But this call does $.fn.test() I don't think this is how it is supposed to work so I think I am doing something wrong, although all the documentation seems to agree that I should be correct. Any one have any advice? Thanks, Cory

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• How to determine the path of the current web site

  - by Velika2

  I wanted to create a function which would return the path of the current web site. This is what I thought was working while running in the IDE: Public Shared Function WebsiteAbsoluteBaseUrl() As String Dim RequestObject As System.Web.HttpRequest = HttpContext.Current.Request Return "http://" & RequestObject.Url.Host & ":" & _ RequestObject.Url.Port & "/" & _ RequestObject.Url.Segments(1) End Function Does this seem like it should work? Is there a more straight forward way?

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• Javascript tail recursion

  - by Misha Moroshko

  Why the following code runs so.... slow....... ? <html><body><script type="text/javascript"> var i = 0; f(); function f() { if (i == 5000) { document.write("Done"); } else { i++; tail(); } } function tail() { var fn = tail.caller; var args = arguments; setTimeout(function() {fn.apply(this, args)}, 0); }; </script></body></html>

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• Defining functions and if statement problems

  - by David Fairbairn

  I'm having a problem with two functions and an if statement. I'm being told the functions go and postcodeChange are not defined. I'm also being told flag is an unexpected identifier at if flag == 1. Any idea where I am going wrong? Thank you. function postcodeChange(){ document.getElementById("goButton").onclick = distanceCheck; } function distanceCheck(){ var distance = document.getElementById("distance").value var patt1=new RegExp("^[0-9]+(\.[0-9]{1})?$"); var out = patt1.exec(distance); if (out == null) { //distance is not a valid number document.getElementById("distanceFlag").value = 1 } else { //distance is valid number document.getElementById("distanceFlag").value = 0 } function go(){ var flag = document.getElementById("distanceFlag").value if flag == 1 { alert("Distance is not valid- enter a number with no more than one decimal point"); } else{ popSubmit('#fa Care Provider Search Go','','0'); } }

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• Unicode identifiers in Python?

  - by viksit

  Hi all, I want to build a Python function that calculates, and would like to name my summation function S. In a similar fashion, would like to use ? for product, and so on. I was wondering if there was a way to name a python function in this fashion? def S (..): .. .. That is, does Python support unicode identifiers, and if so, could someone provide an example for it? Thanks! Original motivation for this was a piece of Clojure code I saw today that looks like, (defn entropy [X] (* -1 (S [i X] (* (p i) (log (p i)))))) where S is a macro defined as, (defmacro S ... ) and I thought that was pretty cool.

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• JQuery Scrollable List Dissapears if scrolled IE7

  - by namtax

  Hi there I have created a time picker using jquery, using the following code // Display Time Picker $('.time').click(function(){ $('.timePicker').remove(); var thisTime = $(this); var timePicker = '<ul class="timePicker">' timePicker += '<li>09:00</li>' timePicker += '<li>09:15</li>' timePicker += '</ul>' thisTime.after(timePicker); $('.timePicker').fadeIn() $('.timePicker li').click(function(){ term = $(this).html(); $(thisTime).val(term); $('.timePicker').remove(); }); }).blur(function(){ $('.timePicker').fadeOut(); }); This adds a dropdown scrollable list of times to any input field with the class "time". This functions as expected in all browsers apart from IE7, where if I scroll the list to choose a time lower down in the list, the list dissapears.. Hope that makes sense, any help would be much appreciated Many thanks

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• How to run Javascript code before document is completely loaded (using jQuery)

  - by eliza sahoo

  Hi all, I am sahring atip with you all.Please add on to this discussion. JQuery helps faster page load than javascript. JQuery functions are fired when the related elements are loaded, instead of complete pageload. This is a common practice to call a javascript function when page is loaded like window.onload = function(){ alert("Mindfire") } or Inside of which is the code that we want to run right when the page is loaded. Problematically, however, the Javascript code isn't run until all images are finished downloading (this includes banner ads). The reason for using window.onload in the first place is due to the fact that the HTML 'document' isn't finished loading yet, when you first try to run your code. To circumvent both problems, jQuery has a simple statement that checks the document and waits until it's ready to be manipulated, known as the ready event $(document).ready(function() { // Your code here });

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• asp.net datasource problem

  - by harold-sota

  I'm insert a dropdwon list in datagrid on row editing. wen i run the project the datasource is not rekognized <asp:TemplateField HeaderText="Lookup 1"> <EditItemTemplate> <asp:DropDownList ID="Loocup1DropDownList" Width="100%" runat="server" DataSource ="<%GetValueForDropDownCombinationContent()%>" DataValueField="LOOKUP_ID" DataTextField="lookup_name" > </asp:DropDownList> </EditItemTemplate> <ItemTemplate> <asp:Label ID="LOOKUP1_NAME" runat="server" Text='<%# Bind("LOOKUP1_NAME") %>'></asp:Label> </ItemTemplate> This is the vb.net function Protected Function GetValueForDropDownCombinationContent() As IDataSource Dim dsProductLookups As New DataSet dsProductLookups = DocumentManager.Data.DataRepository.Provider.ExecuteDataSet("sp_GetCombinationsLookups", productCombo.SelectedValue) Return dsProductLookups End Function any ideas???

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• jQuery UI datepicker options as varialbe

  - by Desmond Liang

  I have a number of inputs on a page function as JQ UI datepicker. Each needs to have different settings. I want to minimize the JS so I save the settings as an attribute in each individual . <input type="text" class="datepicker" name="dateofbirth" id="dateofbirth" size="20" value="" options="{ dateFormat: 'yy-mm-dd',changeYear: true,yearRange: '1920:2010'}" /> <input type="text" class="datepicker" name="expdate" id="expdate" size="20" value="" options="{ yearRange: '2011:2020'}" /> I use js to load the options dynamically as the settings. $(document).ready(function(){ $(".datepicker").each(function(index){ $(this).datepicker("option" , $(this).attr('options')); }); }); datepicker is not functioning. If I empty the parentheses after $this.datepicker it works fine. I have also tried another way to assign settings. ("option",...) no dice.

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• Privacy setting using Graph API

  - by Anthony

  Hello, I'm currently trying to se privacy setting on post I do through Graph API, code is: function graphStreamPublish(){ message1 = document.getElementById('message').value; FB.api('/me/feed', 'post', { message: message1 }, privacy: {value: "CUSTOM", friends: "SOME_FRIENDS", network: "1", allow: "204506204", deny: "515592311", function(response) { if (response && response.post_id) { alert('Post was not published.'); } else { alert('Post was published.'); } }); } Then I just call this function for the things I right on textarea: <center><textarea id="message" cols="50" rows="5">Test goes here!</textarea></center> <br /> <center><a href="" onclick="graphStreamPublish(); return false;">Post message now!</a></center> This does not work however woth the privacy part but works fine without. Am i doing something wrong? Thanks.

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• How can the javascript plugin architecture in raphael/jquery be done?

  - by TimDog

  I'm looking for a barebones javascript example that demonstrates how the javascript plugin architecture works with large javascript libraries (such as raphael or jquery). In either scenario, you build plugins by ensuring your custom plugin follows this pattern: jQuery.fn.pluginName -- so assume I have a library: myLibrary = (function() { //my fancy javascript code return function() { //my return object }; }); How would fn be incorporated into the above myLibrary object to ensure that he resulting plugin is callable? I instantiate myLibrary like so: var lib = new myLibrary(); And now I have included a reference to my plugin in my page: myLibrary.fn.simplePlugin = function() { //more fancy code } So finally, I can just call: lib.simplePlugin(); Basically, what magic is actually occuring when the .fn is used during the creation of the plugin?

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• Is it possible that __doPostBack() would ever send a GET request?

  - by Galilyou

  I'm having a problem with telerik RadGrid, I want to enable multiple row selection. I also want to go to the server whenever a row is selected or deselected. I created a javascript function to handle the Grid's client side events (OnRowSelected, and OnRowDeSelected). The functions look like this: function onOperationRowSelected(sender, eventArgs) { __doPostBack("<%=myControl.ClientID %>", "rowSelected:" + eventArgs.get_itemIndexHierarchical()); } The other function is very similar, the only difference is that it sends the string "rowDeselcted" instead of "rowSelected". On Page_Load I check to see if the request is a Post request using "IsPostBack" and if so, I check to see if it's a rowSelected or rowdeselected. My problem is when I select a first raw on my grid, a Post request happens (which is expected), however, when I select the second row, a GET request is issued, which (obviously) will result in IsPostBack returning false. What am I missing here?

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• custom validation does not seem to get registered.

  - by viet pham

  Hi, Inside a tab, I have a form that is dynamically loaded via ajax. Since the name of the field is dynamic too (e.g. ), I write a custom validation method inside the "on complete" like this. However, the custom code does not get executed (bolded alert never pops up) no matter what i try. $.ajax ( { url: 'index.php?func=trainingmgr&aAction=displayAddForm', type: 'GET', dataType: 'html', complete: function(req, err) { //Append response to the tab's body $(href, '#trainingTabs').append(req.responseText); $.validator.addMethod ( 'tRequired', function(value, element) { if(value == '') { **alert('I am empty');** return true; } else return false; }, '<br>Required field' ); $('#upload' + index).click ( function() { $('#addForm' + index).validate().numberOfInvalids(); } ); } } );

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• Problems with listening an event in child object in Actionscript

  - by Raigomaru

  I have two classes. The first one (the starting class): package { import flash.display.Sprite; import flash.events.KeyboardEvent; import tetris.*; public class TetrisGame extends Sprite { private var _gameWell:Well; public function TetrisGame() { _gameWell = new Well(); addChild(_gameWell); } } } The second: package tetris { import flash.display.Sprite; import flash.events.KeyboardEvent; public class Well extends Sprite { public function Well() { super(); addEventListener(KeyboardEvent.KEY_DOWN, onKeyboard); } private function onKeyboard(event:KeyboardEvent):void { //some code is here } } } But when I press any buttons on my keyboard, the child class Well doesn't have any reaction. What's the problem?

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• type of an array

  - by Tim

  Hi, when I need to pass an array to a function, it seems all the following declarations of the function will work void f(int arr[]) void f(int arr[4]) // is this one correct? for this: int a[]={1,2,3,4}; f(a); But when I assign an array to another array, it fails int a[]={1,2,3,4}; int b[4] = a; // error: array must be initialized with a brace-enclosed initializer So why an array passed as an argument of a function is okay, but used on the rhs of simple assignment is wrong? Thanks!

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• Google Map API V3 geocoder not showing the correct place

  - by TTCG

  I am upgrading my codes from Google Map API V2 to V3. In V2, I used GlocalSearch to get the latitude and longitude for the given address. In V3, I saw google.maps.Geocoder() and try to get the similar detail. However, the lat & long given by the V3 function is not accurate. Pls see the following screenshot here: My codes for V3 are as follow: var geocoder = new google.maps.Geocoder(); function codeAddress(address) { if (geocoder) { address = address + ", UK"; geocoder.geocode( { 'address': address}, function(results, status) { if (status == google.maps.GeocoderStatus.OK) { var latlng = results[0].geometry.location; addMarker(latlng); //Adding Marker here } else { alert("Geocode was not successful for the following reason: " + status); } }); } } Is there better way to get the accurate result in API V3? Thanks.

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