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...
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'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...
I have several different JavaScript objects with methods that i want to keep separate. However, I need some type of observer, callback, or plugin design so that I can trigger these methods at the correct time.  For example, A.Foo() should almost alwa...
I am trying to understand the Observable/Observer design pattern.  This is the code I have so far (code from Javascript Patterns book):              var publisher = {             subscribers: {                 any: [] // event type: subscribers...
I've an observable object defined as follows:  Ext.define ('MyObject', {   mixins: {     observable: 'Ext.util.Observable'   } ,   constructor: function (cfg) {     this.initConfig (cfg);     this.mixins.observable.constructor.cal...
I'm trying to understand best practices for unobtrusive Javascript. Among the ideas of unobtrusive Javascript is that Javascript should not be directly included in the html code of the page, such as onchange=runScript(). Instead, an observer shou...

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