See bottom of question for an update, based on comments/answers: This question is really about the possibility of hidden threads that do not execute callbacks.    I have a question about a potential arcane scenario involving the Node Request module i...

Lets asume I have a code like the following:  var shared = 100; function workWithIt(){     shared += 100; }  setTimeout(workWithIt, 500); setTimeout(workWithIt, 500);   Ideally, this piece of code should add 200 to the variable shared, which is 300 a...

Here's the scenario:  My users are presented a grid, basically, a stripped down version of a spreadsheet.  There are textboxes in each row in the grid.  When they change a value in a textbox, I'm performing validation on their input, updating...

Greetings,  I've been studying javascript, nodejs.  And I don't understand how the concurrency issues are avoided in javascript.  Lets say I'm working on a object   var bigObject = new BigObject();   and I have a setTimer(function(){ work...

Buckle in, this may be a longer ride than expected...  Note: all listeners are delegated to the 'body' and all triggered events are on the 'body' as well.  Intended On-Page-Load Flow   Create selector with id #selectorA Register liste...

The Problem:  Multiple children of a component are having events triggered near simultaneously.  Each of these events are handled by handleChange style functions which use React's immutability helpers to merge complex objects into the state of th...

This question is carefully distilled version of not asynchronous function executed as jQuery Deferred.  We have 2 jsfiddles:   http://jsfiddle.net/XSDVX/1/ - here the progress event is not fired, despite calling notify() function. http://jsfiddle.net...

How would Chrome handle this scenario.  Suppose I have two extensions installed. One extension that turns the page blue and the other one that turns the page red. Which extension gets priority?...

I've recently learned about Redux. I well understood the concept but I don't figure out this line in the official documentation:     Because all changes are centralized and happen one by one in a strict   order, there are no subtle race condi...

I'm currently working on a rather simple logic for processing queued ZPL print jobs, which are stored in an array that's then being iterated sending n amount of copies per job to a printer.   I'm reducing the array into a promise chain mi...