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  • I want a hyperlink to open a browser tab, then all subsequent link clicks go to the same tab

    - by rossmcm
    I suspect I'm out of luck on this one, but here goes... Say I have a CHM help file that has http:// hyperlinks embedded in the help pages. When the user clicks on a hyperlink of the style: <a href="http://www.example.com" target="_blank">click here!</a> a browser window is opened and the target web page is displayed. If a browser is already open a new tab is created and the target displayed in that. If the user clicks on another link (or the same link) another browser window/tab opens, and so on. Is there any way I can force all clicks of the links to go to the same tab/browser window?

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  • C#&ndash;Using a delegate to raise an event from one class to another

    - by Bill Osuch
    Even though this may be a relatively common task for many people, I’ve had to show it to enough new developers that I figured I’d immortalize it… MSDN says “Events enable a class or object to notify other classes or objects when something of interest occurs. The class that sends (or raises) the event is called the publisher and the classes that receive (or handle) the event are called subscribers.” Any time you add a button to a Windows Form or Web app, you can subscribe to the OnClick event, and you can also create your own event handlers to pass events between classes. Here I’ll show you how to raise an event from a separate class to a console application (or Windows Form). First, create a console app project (you could create a Windows Form, but this is easier for this demo). Add a class file called MyEvent.cs (it doesn’t really need to be a separate file, this is just for clarity) with the following code: public delegate void MyHandler1(object sender, MyEvent e); public class MyEvent : EventArgs {     public string message; } Your event can have whatever public properties you like; here we’re just got a single string. Next, add a class file called WorkerDLL.cs; this will simulate the class that would be doing all the work in the project. Add the following code: class WorkerDLL {     public event MyHandler1 Event1;     public WorkerDLL()     {     }     public void DoWork()     {         FireEvent("From Worker: Step 1");         FireEvent("From Worker: Step 5");         FireEvent("From Worker: Step 10");     }     private void FireEvent(string message)     {         MyEvent e1 = new MyEvent();         e1.message = message;         if (Event1 != null)         {             Event1(this, e1);         }         e1 = null;     } } Notice that the FireEvent method creates an instance of the MyEvent class and passes it to the Event1 handler (which we’ll create in just a second). Finally, add the following code to Program.cs: static void Main(string[] args) {     Program p = new Program(args); } public Program(string[] args) {     Console.WriteLine("From Console: Creating DLL");     WorkerDLL wd = new WorkerDLL();     Console.WriteLine("From Console: Wiring up event handler");     WireEventHandlers(wd);     Console.WriteLine("From Console: Doing the work");     wd.DoWork();     Console.WriteLine("From Console: Done - press any key to finish.");     Console.ReadLine(); } private void WireEventHandlers(WorkerDLL wd) {     MyHandler1 handler = new MyHandler1(OnHandler1);     wd.Event1 += handler; } public void OnHandler1(object sender, MyEvent e) {     Console.WriteLine(e.message); } The OnHandler1 method is called any time the event handler “hears” an event matching the specified signature – you could have it log to a file, write to a database, etc. Run the app in debug mode and you should see output like this: You can distinctly see which lines were written by the console application itself (Program.cs) and which were written by the worker class (WorkerDLL.cs). Technorati Tags: Csharp

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  • User/browser fingerprinting without cookies

    - by Art
    I'm sure that many of you have heard about this: http://panopticlick.eff.org/ It's a way to form a somewhat unique fingerprint of a web site visitor based on information about their browser, fonts, plugins, etc... Does anyone know of a library (python!?) to do this? I'd like to allow for visitors to vote on a poll without having to have an account...

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  • Prototype/scriptaculous browser compatibility

    - by xain
    Hi, I developed a page using the latest prototype and scriptaculous versions and after cleaning it up thoroughly, the only browser where my scripts work is ... chrome! Some things don't work at all with ie7(eg BlindUp), and some validations fail with ie8 and firefox 3.5. Any success stories to contradict this ? (Any tips will be appreciated).

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  • Stop event bubbling in Javascript

    - by Kartik Rao
    I have a html structure like : <div onmouseover="enable_dropdown(1);" onmouseout="disable_dropdown(1);"> My Groups <a href="#">(view all)</a> <ul> <li><strong>Group Name 1</strong></li> <li><strong>Longer Group Name 2</strong></li> <li><strong>Longer Group Name 3</strong></li> </ul> <hr /> Featured Groups <a href="#">(view all)</a> <ul> <li><strong>Group Name 1</strong></li> <li><strong>Longer Group Name 2</strong></li> <li><strong>Longer Group Name 3</strong></li> </ul> </div> I want the onmouseout event to be triggered only from the main div, not the 'a' or 'ul' or 'li' tags within the div! My onmouseout function is as follows : function disable_dropdown(d) { document.getElementById(d).style.visibility = "hidden"; } Can someone please tell me how I can stop the event from bubbling up? I tried the solutions (stopPropogation etc) provided on other sites, but I'm not sure how to implement them in this context. Any help will be appreciated. Thanks a lot!

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  • Maintain aspect ratio on browser window resize?

    - by Anthony
    I have a simple page with images, and when the user clicks the image, it opens up a new browser window with the image filling the area. I have the css set on the new window so that the image height and width are both 100% (and overflow is set to hidden) so that the window can be resized. But what I need is for the window to maintain aspect ratio if the user resizes it. Right now, I'm stuck because I'm not getting how the event works, but I think I'm making this harder than it needs to be. Right now I have: $(function(){ $(window).resize(function() { var height = $(this).attr("innerHeight"); var width = $(this).attr("innerWidth"); if(height/width != .75){ window.resizeTo(width,width*.75); } }); }); Before I added the conditional, the window would immediately start shrinking (apparently opening a new window fires the resize event). Adding the conditional preventing this from happening when the window opens, but any resizing starts the shrinking again. Is it just because the height and width are never exactly the right ratio (should I manually set the width to a round number ever time) or is there something else I'm doing wrong? Or is there some other way to get what I'm after that's more straightforward?

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  • Why doesn't onkeydown working properly on IE?

    - by Fabian
    function checkEnter(event) { var charcode; if (event && event.which) { charcode = event.which; alert("Case 1. event.which is " + charcode); } else if (event && !event.which) { charcode = event.keyCode; alert("Case 2. event.keyCode is " + charcode); } document.getElementById("text1").value=""; } <input type="text" id="text1" onkeyup="checkEnter(event)" /> The above function works on both IE7 and Chrome. function checkKeyPressed() { document.onkeydown = function(event) { var charcode; if (event && event.which) { charcode = event.which; alert("charcode is " + charcode); } else if (event && !event.which) { charcode = event.keyCode; alert("charcode (keyCode) is " + charcode); } } } <input type="button" id="button1" onclick="checkKeyPressed(event)" value="Button" /> However this one works only in Chrome. Any idea why?

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  • MooTools Event Delegation using HTML5 data attributes.

    - by Anurag
    Is it possible to have event delegation using the HTML5 data attributes in MooTools? The HTML structure I have is: ?<div id="parent"> <div>not selectable</div> <div data-selectable="true">selectable</div> <div>not selectable either.</div> <div data-selectable="true">also selectable</div> </div>???????????????????????????????????????????????????????????????????????? And I want to setup <div id="parent"> to listen to all clicks only on child elements that have the data-selected attribute. Please let me know if I'm doing something wrong: The events are being setup as: $("parent").addEvent("click:relay([data-selectable])", function(event, el) { alert(this.get('text')); }); but the click callback is fired on clicking all div's, not just the ones with a data-selectable attribute defined. You can see this example on http://jsfiddle.net/NUGD4/ A workaround is to adding this as a CSS class, which works with delegation but I would prefer to be able to use data-attributes as it's used throughout the application.

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  • How do I open a new browser tab?

    - by Ionut Staicu
    Hi guys. I'm working on this project and I have to open a new browser tab. Actually, I have to open a target="_blank" link without the link. I know is not right to interfere with the user preferences, but hey, this is the project requirements. So, long story short, i have to replicate the target="_blank" behavior only with javascript. Is this even possible? Thanks!

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  • event.target doesn't work

    - by rdesign
    Hey guys, I've wrote some jquery code with some draggable elements and one droparea. Unfortunately my droparea can't make a difference between various object. Here's my code. <script type="text/javascript"> $(function() { $("#droparea").droppable({ drop: function(event) { var $target = $(event.target); if($target.is("#flyer")) { alert("adasd"); } } }); }); </script> </head> <body> <div id="droparea"></div> <div class="polaroid" id="flyer"> <img src="images/muesliFlyer.png" alt="flyer" /> </div> Without the if it works. But then I can't get the dropped object. Any ideas why my target isn't recognized? thanks a lot.

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  • Trouble setting IE8 browser mode to IE7

    - by deostroll
    Inspite of putting the following meta tag I am not getting the expected result: <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" > I open the developer tool window. In the same bar where the menu appears there is an item called Browser Mode: it still shows IE 8 by default. Even doing document.documentMode in the console window shows "8". Am I doing anything wrong?

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  • Flex spark web browser problem

    - by sheela
    am using spark web in flex its working fine in IE6 where as in IE7 , Firefox, opera and other browser its not working. on login to spark web its giving error: Problem authenticating with the server or you are not authorised to perform this operation. Please help me out regarding this Thanks n regards Sheela

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  • url with question mark considered as new http request?

    - by Navin Leon
    I am optimization my web page by implementing caching, so if I want the browser not to take data from cache, then I will append a dynamic number as query value. eg: google.com?val=823746 But some time, if I want to bring data from cache for the below url, the browser is making a new http request to server, its not taking data from cache. Is that because of the question mark in URL ? eg: http://google.com? Please provide some reference document link. Thanks in advance. Regards, Navin

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  • Will JavaScript evaluate a property's value if it's not part of an assignment statement?

    - by Bungle
    I've come across a fairly obscure problem having to do with measuring a document's height before the styling has been applied by the browser. More information here: http://sonspring.com/journal/jquery-iframe-sizing http://ajaxian.com/archives/safari-3-onload-firing-and-bad-timing In Dave Hyatt's comment from June 27, he advises simply checking the document.body.offsetLeft property to force Safari to do a reflow. Can I simply use the following statement: document.body.offsetLeft; or do I need to assign it to a variable, e.g.: var force_layout = document.body.offsetLeft; in order for browsers to calculate that value? I think this comes down to a more fundamental question - that is, without being part of an assignment statement, will JavaScript still evaluate a property's value? Does this depend on whether a particular browser's JavaScript engine optimizes the code?

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  • End user browser and OS configuration

    - by Joshua
    Sometimes in case of a bug in our code, we usually ask the end user to provide the browser configuration and OS configuration to isolate the issue. How can we get this information in case of a problem while the end users are accessing a web application.

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  • Browser plugin which can register it's own protocol

    - by Riz
    Hi, I need to implement browser plugin which can register it's own protocol (like someprotocol://someurl ) and be able to handle calls to this protocol (like user clicking on 'someprotocol' link calls function inside my plugin). As far as I undesrtand Skype does something simmilar, except I need to handle links within page context and not in separated app. Any advices on how this can be done? Can this be done without installing my own plugin, with help of flash/java?

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  • GWT Browser mode debugging in IE not working

    - by Kasturi
    I am trying to debug my GWT application in IE but the page does not load. It works fine in Firefox and Chrome. In IE the browser keeps hanging. If you debug a extremely simple page it works in IE. But complex pages do not open up in IE. Can someone help me out. Thankyou

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