I have multiple action buttons, on which i want to show different select Inputs and I want to know last clicked button id, how can I do that? When I use  which(lapply(c(1:10), function(i) { input[[paste0("ActionButton", i)]]}) == TRUE)   It s...
I observed the dataLayer array and I don't see any changes to push. No custom methods at all, actually. How is GTM observing the changes to the array? As far as I know, changes to an Array don't throw any events, do they?    Edit:  I did some...
My question is really "Is the lapsed listener problem preventable in javascript?" but apparently the word "problem" causes a problem.  The wikipedia page says the lapsed listener problem can be solved by the subject holding weak refer...
In order to pass value between angular2 different components, I use different services injected into different components.  In my PagesService component, I define a behavior subject and want to pass a value.  import { Injectable } from '@angular/...
I did some googling and yes I know that questions about the difference between these two has been asked before on stackoverflow and all over the web. But I mostly find worded answers, which can be confusing.   My question is if anyone here can please...
I've been looking over the internet for examples of implementing the observer pattern in jquery.  I would like to have it like this  observer1.observe(subject); observer2.observe(subject);   Define some custom event callbacks for the observers  o...
I have a module:  var progress = {     val: 0 };  var service = (function(){      function someMethod(){         progress.val++;     }      return{         someMethod: someMethod     };  })();  export {service,progress}   someMethod will perform an o...
I'm trying to write an object relationship that follows an observer pattern where the observer cares about a specific set of events that occur on the subject.    I'm not sure if this is 100% standard, but the way I've constructed it, thes...
I'm trying to reverse engineer how facebook handles their notifications, where when you get a message you get instantly notified via the browser.    I've fiddled with it for a little bit and realized that there is always a pending GET request...
I can not find how to implement this (I apologize for the freestyle record):  //assign the event handler for the object "myObj"      myObj.onMyEvent = //do something  //if something happened somewhere, then run the event MyEvent.fire();   The...

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