event-handling

When JS code starts to run, the Global Execution Context is created and sits at the bottom of the execution stack as to "accomodate" Global Variable Object and 'this' . If it is the case for the execution stack to get empty after the whole JS code is run and there is no Global Execution Context, how are we still able to access the global variables (for example, I am running an html file with its JS code and after its completion, I am still able to see the values of global variables through Chrome console...) or how this still points to global object (there shouldn't be any 'this' if there wasn

Can you see downsides to this one-liner other than the fact that multiple uses of it would violate the DRY principle? It seems straightforward but the fact that I haven't seen others propose it makes me wonder if there's a downside to it. This bit of code creates a WeakReference to a method and then registers an event handler that invokes the reference's target. SomeEvent += (sender, e) => ((Action)(new WeakReference((Action)ProcessEvent)).Target)(); Thanks, Ben I don't think that pattern does what you expect. Are you trying to prevent the event from holding a reference to the current object

In the earlier Android Programming Tutorial, page 192, we see an implementation of LunchList#onOptionsItemSelected . Within this implementation we see two Intent s passed to startActivity : one whose constructor is passed LunchList.this , the other whose constructor is passed this . What's the difference? See lines 78 - 91 here . Note how onOptionsItemSelected is not declared within an inner class. In Android/Java does the value of this change within the context of event handlers or function binding via reflection? Could both Intent instances be passed this ? In Java, this refers to the

I would like to detect when the form is going to be maximized to save certain settings (not related to the size nor position) and modify the size and position a little bit. Is there an universal way to do it ? I've tried to catch the WM_SYSCOMMAND message like in this article . It works well for maximization from menu, by maximize button, but it's not fired when I press the WIN + UP keystroke. Does anyone know an universal way how to catch the maximization event including the case with WIN + UP keystroke ? Thanks You can use the WM_GETMINMAXINFO message to save the state of the window and then

Trying to test that an event handler gets called on a clicked element with Jasmine. Have a "Pad" object that contains a DOM element "PadElement", which gets clicked. The event handler is a method on the Pad object: GRAPH.Pad = function(graphDiv, graph) { this.graph = graph; this.clickHandler = function(e) { console.log('padElement clickHandler called'); //this.graph.createVertex(e.clientX, e.clientY); }; this.padElement = GRAPH.padElement(graphDiv, this.clickHandler); } GRAPH.padElement = function(graphDiv, clickHandler) { //Initialize pad var NS="http://www.w3.org/2000/svg"; var pad=document

Yesterday I had a chat with a taxi driver and upon mentioning that I am a programmer, he told me that a couple of days earlier he had experienced the following: upon trying to copy the URL from the address bar of his browser, a messagebox appeared with a message like "Please don't copy this link, rather register" . I am not a web developer, so this might be a lame question :-) but I wonder how such a thing is accomplished? What technology or language gives one this level of control over the events within the browser? The site was some sort of a movie downloading service, as far as I understood