How to find the index of an element in JavaScript
Learn how to use Array.prototype.findIndex() to locate elements in an array
How to split an array into chunks in JavaScript
Learn how to use Array.prototype.slice() to split an array into even chunksHow to get the min and max of an array in JavaScript
Learn how to get the minimum and maximum values of elements in an array in JavaScriptHow to merge two arrays into a unique array in JavaScript
Learn how to get the union of two arrays by combining Set and the spread operatorHow to check if all values in an array meet a condition in JavaScript
Learn how to use Array.every() to check if all elements in array meet a conditionHow to determine if a value is an array in JavaScript
Learn how to use Array.isArray(value) to check if a value is an arrayHow to combine an array into a string in JavaScript
Learn how to use Array.join() to generate string from an arrayHow to split a string in JavaScript
Learn how to split a string into an array of substringsNullish Coalescing in Javascript
Learn how and when to use the Nullish Coalescing Operator ??How to call an async function with Array.prototype.map
Learn how to call async functions from map()Introduction to JavaScript scheduling
Using setTimeout and setInterval to control the execution of code at specified time intervalsHow to compare two arrays in JavaScript
Comparing two arrays without the need for utility librariesHow to swap two array elements in JavaScript
Swapping array elements without needing a temporary variableThe correct way to shuffle an array in JavaScript
Randomizing the order of elements in an array using the modern version of the Fisher-Yates shuffleMax and Min in SQL
Getting to grips with the max and min aggregate functions in SQLHow to get the average of a column in SQL
Using the AVG aggregate function in SQL to get average of the values of a columnJavaScript property access
Dot notation versus brackets, which is preferable and why?How to sum a column in SQL
Using the SUM aggregate function in SQL to sum the values of a columnHow to get a timestamp in JavaScript
Get a number that represents a point in time by the number of ms that have passed since the Unix EpochHow to check if a string contains a substring in JavaScript
Using String.prototype.includes or String.prototype.indexOf to check if a substring existsHow to validate an email address in JavaScript
Learn how to use regular expressions to validate an email addressHow to redirect to another page using JavaScript
Redirecting to pages programmatically using window.locationGetting started with Day.js
Parsing, validating and manipulating dates in JavaScript with Day.jsHow to get all unique values in a JavaScript array
Removing duplicates for a JavaScript array with ES6 SetPostgres naming conventions
What convention should be used when naming databases, tables, and fields?React Hooks: useState
Managing state in React functional components with hooksGetting started with Prettier in VSCode
Consistent, easy and automatic code formatting for you and your team in minutesLoops in JavaScript
Loops explained: for loops, while loops, control flowJavaScript undefined vs null
The difference between undefined and null in JavaScriptHow to group an array of objects by key in JavaScript
Learn how to use Array.prototype.reduce to group an array of objects by keyHow to reverse a string in JavaScript
Learn how to reverse a string in Javascript using the Array.prototype methodsUnderstanding the JavaScript this keyword
Demystifying how the value of this is assigned in different contextsHow to throw an exception in JavaScript
Generating custom error messages using throwHow to use reduce in JavaScript
Getting to grips with one of the harder to understand Array.prototype methodsHow to check the type of a variable in JavaScript
Using typeof & instanceof methods to check the type of any variableString interpolation in JavaScript
How to perform string interpolation using template literalsA guide to package.json
Getting to grips with the file at heart of many codebases in the JavaScript ecosystemIntroduction to CommonJS modules
Getting to grips with the ECMAScript module systemWhat are Falsy values in JavaScript?
A brief look at what evaluates to false in JavaScriptJavaScript default function parameters
How to declare default function parameters in JavaScriptIntroduction to ES modules
Getting to grips with the ECMAScript module systemEasily manage your Node.js version with nvm for Windows
Manage multiple installations of Node.js on WindowsHow to get n elements randomly from an array in JavaScript
Learn how to get a random sample of n elements from an arrayHow to get a random element from an array in JavaScript
Learn how to get a random element from an array in JavaScriptHow to partition an array based on a condition in JavaScript
Create a utility function to partition an array based on a condition in vanilla JSHow to check if a value is in an array in JavaScript
Learn how to check if a value is in an array using includes()How to generate an array from 0 to N in JavaScript
Generate an array of values that you can then manipulate with map, forEach etcHow to flatten an array in JavaScript
Learn how to flatten an array in JavaScriptHow to join two arrays in JavaScript
Learn how to combine two arrays into a new arrayHow to reverse an array in JavaScript
Learn how to reverse an array in Javascript using the Array.prototype methodHow to merge two objects in JavaScript
Learn how to create a new object that combines two objects propertiesVar, let and const
The three methods of variable declaration in JavaScript