JavaScript

The easiest way to return multiple values in JavaScript is by returning an array of multiple elements. Then, you can access the returned values like this: If you were looking for a quick answer, then there you have it! But to write clean code, the above isn’t always the best way to return two values. […]

This guide teaches you how to split strings in JavaScript. How to Split a String in JavaScript? In JavaScript, the string type has a built-in method called split(). You can use this method to split a string by a specific separator, such as a blank space or a dash. This method places the split string

Date formatting is a common operation in JavaScript to make the dates look different depending on the context. Traditionally, you might think you need to use a library such as Date-fns, to format dates. But for smaller projects, using a library to format dates can be overkill because JavaScript also has some built-in data formatting

To get the current timestamp in JavaScript, call the Date.now() function. For example: Output: If that’s what you were looking for, then thanks for reading! If you are interested, the following sections teach you some insight into the significance of timestamps. You will also learn alternative ways to obtain the current timestamp in JavaScript. What

When dealing with URLs in your code, you need a mechanism that easily lets you access the different parts of the URLs. This is a complete guide to parsing URLs in JavaScript. You will learn how to access the specific parts of your URLs, such as the hostname, file path, or query parameters. This guide

When dealing with strings in JavaScript, it’s common for you to need to replace specific characters or substrings with other values. This guide shows you three ways to replace all string occurrences in JavaScript. Also, you learn why some approaches can be better than others. Here’s a quick look at the three approaches you are

In JavaScript, you can fold an array to a single value with the reduce() method. The reduce() method works such that it: The reduce() method accumulates the array of elements into a single cumulative value. For example, let’s calculate a sum of an array of numbers: Output: This is a great demonstrative example of how

To remove the first element of an array in JavaScript, use the built-in shift() function. For example, let’s return number 1 from this array of numbers: Result: Notice that shift() also returns the removed element. This is useful if you want to use it later. To use this returned element, store it into a variable

In JavaScript, the three dots operator (…) means two things: When used as a spread operator, the three dots operator spreads the elements of an array where zero or more arguments are expected. A classic example of this is when merging two arrays. For example: Here the three dots operator spreads the elements of the

In JavaScript, you can use the Array.map() method to: For instance, given an array of numbers, let’s create a new array of the numbers squared: Output: This returns a new array with the original numbers squared. This is a comprehensive guide on how to use the map() method in JavaScript. You are going to learn