Tutorial

Build a Full-Stack Weather App In Under 60 Minutes

Build a stunning full-stack weather app in under 60 minutes with this step-by-step tutorial using HTML, CSS, and JavaScript!

Node.js Featured

A Practical Intro to Node.js

A practical intro to Node.js where we get hands-on and experiment with the asynchronous and event-drive aspects of the popular single-threaded runtime!

lightning-tutorial

Reading from a file in Node.js

In this lightning tutorial, we'll walk through what it takes to read a file using Node.js, using a practical, real-world example where our basic app will read from a configuration file (a .env file in this case). 0. Install Node.js There are many different ways to install Node.

Lightning

Create a Golang Web Server in Under 5 Minutes ⚡️

Create a Go web server in under 5 minutes in the lightning-fast tutorial.

Tutorials Featured

OpenAI Chat API Tutorial

Build a simple chatbot using the OpenAI Chat API. Make a portfolio-worthy project using the same AI language models as ChatGPT!

Java

Running Sum of 1D Array

Learn how to solve the LeetCode algorithm 'Running Sum of 1D Array' in four simple steps.

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Tutorials Featured

How to Save Data to a Database

JavaScript

Array.some()

The Array.some() method returns a Boolean value based on whether or not at least one item in the provided array meets the supplied condition(s).

JavaScript

Template Strings

Template strings are a much cleaner way of embedding variables and expressions within strings as opposed to using string concatenation.

JavaScript

Comparison Operators

In JavaScript, there are two types of comparison operators - strict and type-converting.

JavaScript

Falsy

Falsy is any value that's considered to be false when referred to in a Boolean context.

JavaScript

Truthy

Truthy is any value that's considered to be true when referred to in a Boolean context.

JavaScript

Object Destructuring

Object Destructuring is a little bit of syntactic sugar that can be used to bind the properties of an object to a variable.

JavaScript

Array.map()

The Array.map() method is a concise way to run the logic of a provided callback function over each element of a particular array.

Algorithms

Boo Who

Learn how to solve the freeCodeCamp algorithm 'Boo Who' using an if-else statement!

JavaScript

Array.includes()

The Array.includes() method looks through an array for a specified value and returns a boolean.

Algorithms

Make a Person

Learn how to solve the freeCodeCamp algorithm 'Making a Person' using fundamental concepts of Object Oriented Programming in JavaScript!

JavaScript

Falsy Bouncer

Learn how to solve the freeCodeCamp algorithm 'Falsy Bouncer' using the Array.filter() method!

JavaScript

Ternary Operator

The ternary operator is an incredibly useful and more concise way of writing your if-else statements.

JavaScript

console.time() & console.timeEnd()

A quick tip on how to use the console.time() and console.timeEnd() methods from the Google Chrome Devtools API.

JavaScript

console.error()

A quick tip on how to use the console.error() method from the Google Chrome Devtools API.

JavaScript

console.table()

A quick tip on how to use the console.table() method from the Google Chrome Devtools API.

JavaScript

Adding CSS to Text in Chrome Console

A quick tip on how to add CSS to your console.log statements.

JavaScript

String.match()

The String.match() method accepts a regular expression as a parameter which is then used to scan a string for any matches.

Algorithms

Convert HTML Entities

Learn how to solve the freeCodeCamp algorithm 'Convert HTML Entities' using the String.split(), Array.map(), Array.splice(), and Array.join methods!