JavaScript Apprenticeships

I'm learning some ES6 features and of course came across the let keyword and its new scope (dif… Read more Javascript Hoisting Var Vs Let

I'm trying to use defineProperty to made attributes not appear in for...in cycle, but it doesn&… Read more Javascript Defineproperty To Make An Attribute Non Enumerable

According to the spec (Annex C), strict-mode code can't do pretty much anything that might assi… Read more Why Does Ecmascript 5 Strict Mode Go To Such Great Lengths To Restrict The Identifier `eval`

I'm using a base custom object extended with prototype function Person() {} Person.prototype.N… Read more Avoid Adding Methods And Properties To Custom Object

When I put this array into my Server/servermethods.js I get this error: server/serverMethods.js:… Read more Unexpected Token Illegal Javascript/meteor

Core Question I need help coming up with a concept to achieve my goal. I am having a problem comin… Read more Idea On Content Passing. Help Needed

I'm using ES5. I'm learning JavaScript. I did this modal, but I want to re-factor the code … Read more Functional Javascript Programming - Making A Modal, A Popup, And Refactoring It

I'm currently developing a 2D graphic library in JavaScript, and now I'm sticking with the … Read more How To Transform The Image Pattern In Javascript Canvas Fillingstyle?

I think it is an old Javascript behavior (Crockford said it is a design error) that inside a functi… Read more For Javascript, What Prevents Modern Implementation Not To Treat Arguments As A Real Array?

I'm reading up a bit on using Strict Mode for JavaScript and it seems that, generally speaking,… Read more Does Javascript (ecmascript5) Strict Mode Offer Significant Performance Advantages To Merit Widespread Use?

So after a big argument/debate/discussion on the implementation of null and undefined in javascript… Read more Null Vs. Undefined And Their Behaviour In Javascript

I continue working on my JavaCC grammar for ECMAScript 5.1. It actually goes quite well, I think I&… Read more How To Implement Javascript/ecmascript "no Lineterminator Here" Rule In Javacc?

Why can't I assign new properties to non-frozen object, which has frozen prototype: Working wit… Read more Assign New Property To Empty Object Which Has Frozen Prototype

I have an complex object and based on an input array I need to modify properties inside of this com… Read more Manipulating A Complex Object Based On An Input Array

I am trying to catch an error caused by an async javascript callback function, try{ setTimeout(()… Read more Using Try Catch On Error Generated By Asynchronous Callback Function

Fullcalendar.io is quickly becoming the top-choice library for calendar applications. Is it possibl… Read more How Can I Use Fullcalendar.io As A Type="date" Picker?