javascript

Articles: 173

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Sending PUT HTTP Requests with Axios

Axios is a JavaScript library for making HTTP requests, either in the browser or Node.js. Unlike the popular Requests library, Axios is natively promise-based, making it more suitable for modern applications taking advantage of newer JavaScript features, like Promises and the async/await syntax. If you're experienced in web...

Scott Robinson

Oct 19, 2021

Article

Validate Email Addresses with Regular Expressions in JavaScript

For web developers, validating user inputs in various types of forms is of crucial importance. Since that is the starting point of data being sent between the client and the server, you need to make sure that everything starts off on the right foot - lest you end up with...

Lazar Ristic

Oct 14, 2021

Article

Rounding Numbers in JavaScript using ceil(), floor() and round()

In this article, we'll be taking a look at how to round a number to an integer (whole number) in JavaScript. JavaScript provides three different methods to achieve this goal: the round() method, the ceil() method and the floor() method. All of these are static methods of the Math object....

Lazar Ristic

Oct 13, 2021

Article

Heap Sort in JavaScript

In this guide, we will explore Heap Sort - the theory behind it and how to implement Heap Sort in JavaScript. We will start off with what data structure it's based on (massive foreshadow here: it's a heap!), how to perform operations on that data structure, and how that data...

Cansın Güler

Oct 11, 2021

Article

Working with JavaScript's Built-In Array Functions

When working with any programming language, you'll probably need some functionality that is not integrated into that language natively. Thus, you'll either implement them yourself, or turn to using various modules or libraries. This directly affects the efficiency of your application (more memory usage, more HTTP requests, etc.). To avoid...

Lazar Ristic

Sep 10, 2021

Article

Working with JavaScript's Built-In String Functions

Lazar Ristic

Sep 09, 2021

Article

Calculate Factorial With JavaScript - Iterative and Recursive

A factorial of a number is the product of that integer and all the positive integers that are lesser than or equal to it. It has to be a positive integer - otherwise, the logic extends to negative infinity. In other words - calculating a factorial means multiplying all whole...

Ruslan Hasanov

Aug 18, 2021

Article

Getting Started with Collections in JavaScript

Groups of data in different forms are one of the fundemental data structures in most programming languages. In many cases, groups of data expressed through different data types are referred to as Collections. In this guide - we'll take a look at Collections in JavaScript and when to use which...

Lazar Ristic

Aug 12, 2021

Article

Guide to Regular Expressions and Matching Strings in JavaScript

Matching strings or string patterns can be a real struggle. In the most common cases, you'll need these to validate e-mails, user inputs, file names, or most kinds of input strings. While there are many pattern-matching libraries and approoaches - a time-tested approach is using Regular Expressions to define a...

Lazar Ristic

Aug 10, 2021