javascript,phonegapRelated issues-Collection of common programming errors
Daniel Beardsmore
javascript onkeydown
Imagine a DHTML dialog box with the following markup:<div id=”someDialog” class=”dialog”><h2>Title of dialog</h2>Lots: <input …>of: <select …>controls: <textarea …><input type=”submit” value=”OK”><input type=”reset” value=”Cancel”> </div>The user will expect hitting escape to cancel the dialog. This in itself isn’t hard — just add a keydown event handler to document.documentElement to check for ev.keyCode == 27, and use that to close t
Dan Prince
javascript inheritance prototype
I quickly drafted a little helper method to make undefined variable checks a little easier.Object.prototype.is = function() {for(var i in arguments) {if(this === arguments[i]) {return true;}}return false; };Designed be used like this: foo.is(undefined, false) to check whether foo was undefined or false. The test case I used was:var a = false; a.is(false); > falseSlightly confused, I played around with it a bit more. Some console.logging revealed that the equality checks were failing because t
Corey Hart
javascript ios safari mobile-safari deep-linking
I am looking for an event on mobile safari that will detect when the page has been hidden due to a redirect. I want to open my app directly if a user has it installed, then attempt facebook if it is installed, and if not then go to the webpage for that id.If ‘myapp’ is installed, then myapp is opened. But the safari tab still gets redirected to facebook.com If ‘myapp’ is not installed, but facebook is, then facebook ios app is opened. But the safari tab still gets redirected to facebook.comI’ve
Gruffy
javascript jquery json string
I am running into an odd little problem with parsing some JSON which has quotes in it. I am using the native JSON.stringify and JSON.parse functions to do this. If I stringify an object which an object which has quote marks in it, they are escaped as one would expect. If I then parse this back into an object, it again works fine.The problem is occurring where I stringify, then print the object to a page, then parse the resulting string. If I try to do this, the parse function fails as string
Marc
javascript html5 validation
We have recently started adding HTML 5 client side validation on out forms. An interesting side effect that I ran into is this. For some forms we create an overlay with a loading indicator when the form is submitted. This is done to protect the form against multiple submissions. It also looks cool. However, when a HTML 5 client side validation event occurs, e.g. REQUIRED, the on submit handler is triggered, and the overlay displays but b/c of the client side validation the form is not actually s
wagamama
javascript node.js
I would like to get system notifications and pass them through http to client.Now I use node.js to provide these two services in one process, but there is a problem. The notification listener has its own main loop listening to system events, and when the service is started, it makes the server stop providing http service. I think if I could combine main loops of these two services into one, the problem may be solved. Is this possible? And how could I get start?Thank you,Here is the sample code:v
Timo
javascript path svg
I have tried to find a way to implement cross browser path normalizer. There IS a native way which is described here and functional example is here, but it works only in newest Opera (but not in IE, FF, Safari, Chrome).The native way uses pathElm.normalizedPathSegList and it converts all relative coordinates to absolute ones and represents all path segment types as a following subset of types: M,L,C,z.I have found only one javascript code and jsfiddled functional example of it, but it works only
John Gardeniers
javascript css
First up, JavaScript is definitely not my native tongue. Nevertheless, I’ve been tasked with creating a web page where the user can use a colour picker to change CSS elements. These then need to be sent back to the server to be stored in a database. It’s all working so far except the last part, because I’m stuck reading the required elements.Using the code below works fine for any single word elements, such as color, but fails for any hyphenated ones, such as background-color, which return undef
Will
javascript
I’m learning lots of javascript these days, and one of the things I’m not quite understanding is passing functions as parameters to other functions. I get the concept of doing such things, but I myself can’t come up with any situations where this would be ideal.My question is:When do you want to have your javascript functions take another function as a parameter? Why not just assign a variable to that function’s return value and pass that variable to the function like so:// Why not do this var f
dystroy
javascript json parsing
When I am using below code :{“info”:[{“name”: “Adam”,”address”: “Park Street”}] }It is parsing perfectlybut adding on further code like:{“info”:[{“name”: “Adam”,”address”: “Park Street1″},{ //<—— getting error here”name”: “Bob”,”address”: “Park Street2”},{“name”: “Clarin”,”address”: “Park Street3”}] }I am getting error : Parse error
Eran
ios phonegap push-notification apple-push-notifications
Similar question here: jQueryMobile, Phonegap and Device Token – iOSThe scenario is, I have this PhoneGap web based application, and the native iOS help me registered the device on APN and I received the device token in my server database.Question 1: How do you associate a registered user (through the UIWebView) to this device token using PhoneGap?What’s in my mind now is to write a custom plugin and pass the device token along during user registration. Is there any better alternative?Question 2
Meindert
video phonegap youtube sencha
I want to play a Youtube video in/from my Sencha/Phonegap built app in Android and iOS. But it fails on both Android and iOS. I’m using an Ext.XTemplate to dynamically load the youtube video code in the following code sample:'<iframe class=”youtube-player” type=”text/html” src=”http://www.youtube.com/embed/{youtube_url}” frameborder=”0″ allowfullscreen></iframe>’,This fails for me: On Android, my video thumbnail displays with a play button, but when I click it it will not play. On
Klaus Breyer
ios xcode facebook phonegap
want to do the first time something with xcode and phonegap. Because I am doing a lot of facebook apps, I want to build a native iOS app with Facebook Login. Followed the Steps here: https://github.com/davejohnson/phonegap-plugin-facebook-connectGot the problem, that the plugin doesnt show up. I copied it like this in the Plugin Folder of my project: http://i.stack.imgur.com/ueYk0.pngBut it is now displayed in Xcode as yellow folder or files in the project structure. Think that it is logical, th
kosbou
android plugins phonegap
Hi I am in mobile app.I have developed an app in phonegap (html5, JQuery, JS) and I want to develop a plugin to print to a BT printer.I download printer manufacturer’s SDK and I imported the appropriate .jar file to my project with the following way:To include this library into your project:Drag the appropriate library file into the Project Explorer from the SDK package Right click the project folder and choose Properties Click Java Build Path Click Libraries and the Add JARs button At the top o
Invincible
javascript html5 phonegap mobile cross-platform
i have made Hello world test app for Android and iOS using PhoneGap Framework.I want to invoke Native Screens from the HTML page. How can i invoke native screen from HTML page? And vice versa.
RRR
android phonegap cordova phonegap-plugins
I have to develop an Android application using phongap that retrives the sensors data from the device. One of the sensors I have to listen to is the ambient light sensor. This sensor has no implementation in phoneGap, so I have to add it as a plugin to PhoneGap. I know how to add plugin and I know hoe to access the ALS data from Java – but in order to be sure that I am implemnting it well I want to implement it as PhoneGap implements other sensors like Accelerometer. Therefor I wrote a ALSManage
kosbou
android plugins phonegap
I developed a mobile app in phonegap (html5, JQuery, JS) and I want to develop a plugin to print to a BT printer.I download printer manufacturer’s SDK and I imported the appropriate .jar file to my project.I create the following pluginjsvar HelloPlugin = {callNativeFunction: function (success, fail, resultType) {return cordova.exec(success, fail, “com.tricedesigns.HelloPlugin”, “nativeAction”, [resultType]);} };javapackage com.tricedesigns;import org.apache.cordova.api.Plugin; import org.apache.
Aa?irkhan
android phonegap phonegap-plugins
i need to fetch contact list from android device using phonegap…..i have follow this one PHONEGAP CONTACT APIand wrote this code<!DOCTYPE html>PhoneGap Device Ready Example<script type=”text/javascript” charset=”utf-8″ src=”phonegap-1.4.1.js”></script> <script type=”text/javascript” charset=”utf-8″>// Call onDeviceReady when PhoneGap is loaded. // // At this point, the document has loaded but phonegap-1.0.0.js has not. // When PhoneGap is loaded and talking with the nat
dream1
objective-c xcode phonegap sencha-touch-2 phonegap-plugins
I need some Help regarding Phonegap plugins: First , i have a JS File which invoke the native code using the phonegap.exec() containing the result handler function, error handler function , a reference to the native class’s name and native function name as well as an array of parameters . My question is : if it is possible to invoke the function (native method) with given specified parameters? That means : in my phonegap plugin file (.h & .m) 1- can i specify the arguments and their Types (
Vortex
android wcf jquery-ajax phonegap jsonp
Firstly I would like to thank all the experts here on stackoverflow, by reading questions asked and looking at example code and reading the answers i have been able to get to this point. Thank you once again!I have been spending hours and hours searching for a solution, I’ve read through many posts on this issue. It’s seem this is a issue a lot of others are/has been struggling with.I would highly appreciate any more advise or tips if somebody can assist in this frustrating issue.All my develop
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