Front End Web Developer

stringify is used to transform JSON into a string.

The 3 equal signs mean "equality without type coercion". Using the triple equals, the values must be equal in type as well.

☛ == is equal to

☛ === is exactly equal to (value and type)

☛ 0==false // true

☛ 0===false // false, because they are of a different type

☛ 1=="1" // true, auto type coercion

☛ 1==="1" // false, because they are of a different type

There are several technical differences between these two types of requests, regarding length limitation, security, caching and a few others. But if someone asks you WHEN would you use it, I'd say one of the most important points that any front-end developer should take into account is that we should only use GET for idempotent requests, it means requests that don't make significant changes in the backend system or database but if you do need to make inserts, updates or deletes in a database, trigger emails or any other major action, POST is recommended.

The basic rule for Coffee Script

☛ Whitespace matters: There are no curly braces in CoffeeScript

☛ No parentheses: Functions that take arguments do not require parentheses

It may depend on what you are using it for. There is some debate on this but generally a good question to ask to get an understanding of the JS knowledge.

Event delegation allows you to avoid adding event listeners for specific nodes. Instead, you can add a single event listener to a parent element.

Ie6 is not dead, just ask China which represents a nice chunk of the worlds online population. Your pages should at least be functional on IE6, unless you dont care about half the worlds population.

Flask uses thread local objects internally so that user don’t have to pass objects around from function to function within a request in order to stay threadsafe. This approach is useful, but it requires a valid request context for dependency injection or when attempting to reuse code which uses a value pegged to the request.

Prototypal OO is the other major programming paradigm that really lets JavaScript shine—objects linked to other objects (OLOO). You’re looking for knowledge of when and where to use prototypes, liberal use of “Object.assign()” or mixins, and a solid grasp of concepts like delegation and concatenative inheritance.

Closures are expressions, usually functions, which can work with variables set within a certain context. Or, to try and make it easier, inner functions referring to local variables of its outer function create closures.

The goals of such standards are to ensure cross-platform compatibility and more compact file sizes. The focus of these standards has been to separate "content" from "formatting" by implementing CSS. It eases maintenance and development.

CoffeeScript is a small programming language that compiles into JavaScript. It helps to write JavaScript code better by providing you with a more consistent syntax and avoiding the irregular nature of JavaScript language

The basic rule for Coffee Script:

☛ Whitespace matters: There are no curly braces in CoffeeScript

☛ No parentheses: Functions that take arguments do not require parentheses

Functional programming is one of the key paradigms that makes JavaScript stand out from other languages. Look for examples of functional purity, first-class functions, higher-order functions, or using functions as arguments and values. It’s also a good sign if they have past experience working with functional languages like Lisp, Haskell, Erlang, or Clojure.

☛ Sprites, compressed images, smaller images;

☛ include JavaScript at the bottom of the page;

☛ minify or concatenate your CSS and JavaScript; and

☛ caching.

Clone function is useful in creating a complete new object in Coffee Script by

☛ Copying all attributes from the source object to the new object

☛ Repeating the steps of copying attributes from the source object for all sub-objects by calling the clone-function

☛ Creating a new object as the source object

HTML is HyperText Markup Language used to develop the website.

XHTML is modern version of HTML 4. XHTML is an HTML that follows the XML rules which should be well-formed.