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whenever i try to run something like the following, firebug tells me that 'markers is undefined… Read more Javascript - Global Variable Not In Scope After Being Defined In Callback?

How would you explain JavaScript closures to someone with a knowledge of the concepts they consist … Read more How Do Javascript Closures Work?

I have been wondering for a while if I can use a variable in JS before it is defined, such as the f… Read more In Javascript, Can I Use A Variable Before It Is Declared?

I'm new to JavaScript and therefore confused for the variable scope... I'm trying to load a… Read more Javascript: Onload And Onerror Called Together

I have two example pages that are behaving differently and I would like to know why. To me they see… Read more Javascript Scoping Variables Theory

I have a directive that is depended on a controller which gets data from an api though Ajax call. I… Read more $scope Exists On Browser Debugger, But Does Not Exist In Terminal

In javascript, What is the difference between function declaration and function expression in terms… Read more Function Declaration - Function Expression - Scope

I understand the block vs. function scoping of let & var (or I thought I did). Recently I ran a… Read more Why Let At Function Scope In Javascript?

I'm trying to use an external object inside mongodb map/reduce functions. If the object has a v… Read more Mongodb Mapreduce Scope - Referenceerror

Please consider snippet below- for(let i = 1; i Solution 1: General Explanation When you use let … Read more Javascript: Understanding Let Scope Inside For Loop

I'm working on a project that has many iframes that are opened and closed in a parent window. I… Read more Inject Javascript Function Into Parent Window From Iframe

Using CreateJS, I have output a canvas with instances of various objects, animating in various ways… Read more Scope (i Think?!) Challenge In Javascript

It all started with these simple lines of code: a = 3; b = 2; function line(x) { var a = 5; … Read more Variable Scope And Var

I am slightly confused as to how exactly scope works in JavaScript, mainly lexical scope. I underst… Read more Lexical Scope In Javascript

I want to loop through an array to perform $http.jsonp requests in angular, however each request wi… Read more Angularjs Foreach Loop Through Http Requests Dependent On Previous Request

New to Angular. I'm creating a directive (attribute) for global use through the whole project. … Read more Angularjs: Manipulate The $scope Of An Unknown $element

I'm trying to better understand the use of this. In experimenting with this code, I found I can… Read more I'm Trying To Better Understand The Use Of `this`. The Example Is Verbose, But Its For The Purpose Of Trying To Better Understand

Strange problem, I cannot access the $rootScope in CtrlB variable that is getting set in CtrlA. H… Read more Angularjs - Cannot Access Rootscope

Because of the complexity of this application, I have a need to wrap Facebook API calls, like so. /… Read more Extract Data From Anonymous Function Scope

I very confusing about the value of this at the moment of an invocation function using arrow functi… Read more Value Of This Inside Object Method?