Core JavaScript: Object-Oriented Programming, Built-in Objects, and Browser Model
Object-Oriented Programming in JavaScript
JavaScript follows an object-oriented paradigm similar to Java, treating entities as objects to model real-world logic.
Class Definition and Instantiation
The class syntax provides a structured way to define blueprints for objects.
<!DOCTYPE html>
<html>
<body>
<script>
cla ...
Posted on Sat, 16 May 2026 18:23:41 +0000 by jeremyphphaven
Understanding Function Currying in JavaScript
What is Currying?
Currying transforms a function that takes multiple arguments into a sequence of functions, each accepting a single argument. Named after mathematician Haskell Brooks Curry, this technique originates from lambda calculus and plays a significant role in functional programming.
Why Use Currying?
Currying serves several practical ...
Posted on Sat, 16 May 2026 02:38:40 +0000 by MikeSpider
Building the Popup Interface for a Chrome Image Downloader Extension
Popup Interface Architecture
The popup serves as the primary user interface for the image extraction extension. When activated, it dispatches a collection event to the content script running on the active tab. Once the content script finishes aggregating the image URLs, it transfers the data array back to the popup for rendering and interaction ...
Posted on Fri, 15 May 2026 19:31:03 +0000 by dcgamers
Object-Oriented Programming in ES6 JavaScript
Object-Oriented Programming
ES6 Classes and Objects
Objects
In the real world, everything can be considered an object - a concrete entity that can be seen and touched. For instance, a book, a car, or a person can be objects. Similarly, a database connection, a web page, or a server connection can also be treated as objects.
Objects consist of p ...
Posted on Wed, 13 May 2026 16:36:22 +0000 by gemmerz
Block Scoping and Constants in JavaScript ES6: let and const
The let Declaration
Basic Usage
The let keyword introduces block-scoped variables. Unlike var, variables declared with let are not accessible outside their containing block.
// Example with var
{
var globalVar = 'leaks';
}
console.log(globalVar); // Outputs: leaks
// Example with let
{
let blockScoped = 'does not leak';
}
console.log(block ...
Posted on Sun, 10 May 2026 22:47:34 +0000 by Adam W
Converting Array-Like Objects to Standard Arrays in JavaScript
Array-like objects are frequently encountered in JavaScript development. Technically known as pseudo-arrays, they possess specific characteristics that mimic arrays without fully behaving like them.
The core definition of a pseudo-array includes:
An object structure.
A numeric length property.
Numeric keys that allow iteration.
However, these ...
Posted on Sat, 09 May 2026 13:41:27 +0000 by itaym02