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This question already has an answer here: How does the “this” keyword work? 22 answers I have this class in Javascript: return function (settings) { var items = [], formHelper = new FormHelper(items), that = this; this.currentItem; this.initialize = function () { settings.listFn().then(function (response) { angular.copy(response, items); if (response.length > 0) { that.setCurrentItem(response[0]); } }); } } In the initialize method, I use a promise. When this promised is finished, the anonymous function is executed. Within the function you see the use of that , which is declared at line 4.

I have a conflict with calling the general jQuery click function and so I need to call an onclick event on the HTML element itself while still being able to use $(this) $('.item-main-section, .item-status').click( function () { var slideHeight = $(this).parent().children('.item-slide-section').height(); if ($(this).parent().height() > 50) { $(this).parent().animate({height: '50px'}, 300); $(this).parent().children('item-slide-section').animate({bottom: '0px'}, 300); } else { $(this).parent().animate({height: slideHeight + 50 + 'px'}, 300); $(this).parent().children('item-slide-section')

this thread was started here but due to lack of an altogether good example (and in order to avoid delete all that question) it is re-written here. So, in the following example, the void cppthread::ThreadedFunc() gets spawned to execute as a separate thread . Instead I would prefer void ThreadedWrite::ThreadedFunc() to be executed. How can I do that? (some more details follow after the code) cppthread.hpp #ifndef CPPTHREAD_HPP #define CPPTHREAD_HPP #include <pthread.h> using namespace std; class cppthread { public: cppthread(); virtual ~cppthread(); virtual void threadedFunc(); ///parentObj (ie

var ball = { x: 20, y: 500, vx: 100, vy: 100, width: 13, height: 13, draw: function() { var img = new Image(); img.src = 'images/ball.png'; img.onload = function(){ ctx.drawImage(img, this.x, this.y); }; }, I want the drawImage() line of code to refer to the ball.x and ball.y. Instead of using ball.x and ball.y, I want to use "this" keyword so that i can turn the ball object into a function that is a mass constructor/prototype if i end up wanting to (able to make ball1, ball2, ball3 etc.). I think "this" is not referring to ball anymore because it's in a nested function? Is there any way

First question on SO and I hope I’m not duplicating anything; I’ve looked at other questions and think mine is different enough to warrant asking. Basically, is there a way to have the this that’s in the method body of a method written using the shorthand notation to be either lexical or bound to a specific value? The motivation for this comes from wanting to use the ES6 method shorthand when I was implementing the iterator protocol , in which the @@iterator method, when called, returns an iterator object. That iterator object has to have a next() method, which when called itself returns

I'm working on a WordPress Widget and the examples all have huge HTML/PHP chunks intermixed and it is impossible to read, so in the interest of trying to clean stuff up I'd like to move all of the HTML rendering to a separate PHP file that will be include() 'd. The trick to this is, the file I include doesn't appear to have access to $this and I'm unsure how to fix that. widget.php class Preorder extends WP_Widget { ... function form() { include('form.php'); } } form.php <p> <?php echo $this->get_field_id('title'); ?> </p> Which results in [31-Aug-2011 19:59:19] PHP Fatal error: Call to a

I'm having some trouble with some code in Visual C# for Windows Phone The trouble is not that it does not work, because it does, but I don't understand how =P Within a static class, a static method is created, which gives itself as a parameter: public static void MethodONe( this Timeline animation ) { //this class does not extend the TimeLine class, and is not connected to it in any //such way. animation.MethodTwo( ); } public static void MethodTwo( this Timeline animation ) { someCode( ); } How is this parameterpassing called, and what does it do, exactly? This is a so called extention method