Sorting arrays of data is an everyday use case in applications. For example, you want to display a list of names in alphabetical order and allow the user to toggle the sorting from ascending to descending and vice-versa. This tutorial shows you how to sort an array of strings in …

Modern JavaScript ships with the dedicated URLSearchParams class to interact with URL query parameters. This class parses query parameters from a given string and provides methods to interact with the parameters. For example, you may append, delete, get, sort, or iterate through all items using the forEach, keys, or values …

Vite is a modern tool to bundle your frontend assets. You’re mainly using ES Modules when working with Vite. And Vite extends the global import.meta object with handy utilities. For example, it adds an import.meta.glob function allowing you to resolve files from a path. In combination …

We started using Vite to bundle our frontend JavaScript. Vite is a modern, fast tool to build and serve frontend assets. It’s a solid choice when working with a framework like Vue.js or React. Yet, we fought the „Unexpected token export” error. It told us that the export …

JavaScript uses two representations of „empty“ values. When „empty“ we mean that they don’t have an exact value assigned. These two values are null and undefined. Both values, null and undefined, are valuable in JavaScript. Except when you are not checking for them. In such cases, you’re running …

MongoDB requires each document to contain an _id field. If the _id field is not present when inserting a document, MongoDB generates an ObjectId for you. ObjectIds have a length of 12 bytes: 4-byte timestamp, 5-byte random value, and 3-byte incrementing counter. An ObjectId can be formatted as a hex …

MongoDB requires each document to contain an _id field. If the _id field is not present when inserting a document, MongoDB generates an ObjectId for you. You can use ObjectIds as the primary key in your application. When requesting information from the browser you may send an ObjectId as an …

Sometimes it’s helpful to translate dates into labels in your web application. For example, the human brain perceives the label „yesterday“ easier than translating the string of yesterday’s date to „yesterday“. This tutorial shows you how to calculate yesterday’s date in JavaScript. {{outline}} How Do You Get …