Asynchronous Code with JS

A promise returns the same data as a callback function, but can await the reply. With this, when there is a delay receiving data, the syntax is nicer and the better error handing. Most importantly, the browser can continue processing the page and then fill in the delayed data whenever it is ready. The above allows for JavaScript to step away from the normal synchronous processing order, which is running commands one after the other in the order   MORE q

By on April 17th, 2020 in

Scope in JavaScript

In English, "scope" is defined as: "The extent of the area that something is relevant". In JavaScript, this definition holds, with one small adjustment: "The extent of the area that something is accessible". With this in mind there are two basic areas with which a variable can be contained and is accessible: globally and locally. Global Scope Variables with global scope are part of the global object. In a web browser, this  MORE q

By on April 16th, 2020 in

Programming Methodologies in JavaScript

Here I compare Object-Oriented Programming (OOP) and Functional Programming, highlighting their fundamental differences. OOP utilizes inheritance and encapsulates data, focusing on "what something is", while Functional Programming emphasizes function composition and immutability, concentrating on "what something has". Both methods have benefits and drawbacks influencing code clarity, maintainability, and memory efficiency.  MORE q

By on April 15th, 2020 in

DOM Access in JavaScript

Here I explore how to utilize the JavaScript DOM Web API to manipulate document elements. It highlights methods for accessing and modifying elements, such as retrieving elements by ID, creating new ones, and altering styles. Additionally, it describes various data types within the DOM API, enhancing understanding of its structure and capabilities.  MORE q

By on April 14th, 2020 in

Strict Mode in JavaScript

Strict mode can be turned on by the developer to run a variant of JavaScript in the browser. This variant uses different semantics to run JS code. Initiating this is as simple as writing: 'use strict'; One use case is as a temporary measure during development to uncover errors that would otherwise fail silently. In addition, if browser support can be  MORE q

By on April 14th, 2020 in

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