closures

I know this kind of question gets asked alot, but I still haven't been able to find a way to make this work correctly. The code: function doStuff () { for (var i = 0; i< elementsList.length; i++) { elementsList[i].previousSibling.lastChild.addEventListener("click", function(){ toggle(elementsList[i])}, false); } } // ends function function toggle (element) { alert (element); } The problem is in passing variables to the toggle function. It works with the this keyword (but that sends a reference to the clicked item, which in this case is useless), but not with elementsList[i] which alerts as

in a related question I have posted this code. It almost works, but the counter doesn't. Can we fix it? (no jQuery, please) <script type="text/javascript"> var intervals = []; var counters = { "shoes":{"id":"shoe1","minutes":1,"seconds":5}, "trousers":{"id":"trouser1","minutes":10,"seconds":0} }; // generate this on the server and note there is no comma after the last item window.onload = function() { for (var el in counters) { countdown(counters[el]) }; } function countdown(element) { intervals[element.id] = setInterval(function() { var el = document.getElementById(element.id); var minutes =

I have a Object based on some closure, and want to implement event scheme here: var class1 = function(val1) { var val = val1; //------ want to call a method of Object of class1-------- var self = this; setTimeout(function() { self.onEvent(); }, 1000); //---------------- return { f1: function() { return val; }, onEvent: function() { console.log('not implemented yet. Override'); } }; }; var obj1 = class1(5); console.log(obj1.f1()); //5 obj1.onEvent(); //not implemented yet. Override obj1.onEvent = function() { console.log('event fired'); } got error, and I know the reason, and I need a solution:

I'm trying to spawn different threads for some processing. I use the for loop index for some logic inside each thread. How can I get the different threads to print 1,2,3,4, 5 in the code below? Each time I run this, I get different numbers as output - 3,3,3,4,6,6 & 2,2,3,5,5,6 etc. I tried using the lock object, but it stil wasn't doing it correctly. Can anyone help me achive this. I just want to make sure each thread/task gets the right index. Note that each task has been forced to run on a separate thread. List<Task> tasks1 = new List<Task>(); for (int j = 1; j <= 5; j++) { tasks1.Add(Task

This question already has an answer here: Promise.all().then() resolve? 2 answers I am working on a piece where I have to get json data from an API for different cities and build DOM. So far, I have been able to do both. Only problem is that the API response time for the different cities are different. So, when I build the DOM they are not in the same order as I call the function. From what I recall I need to use promise to get it that order. My questions now are: How can I use an array of promises (since my input will vary). Also how do I execute an array of promises? My working code so far: