Check out all our TypeScript tutorials.
When working on TypeScript applications, especially those involving fixed sets of related values like states, cities, or user roles, enums become an essential tool for writing maintainable code. Recently, while working on a project for a US-based company, I encountered a requirement to loop through enum values to display options in a UI dynamically. For … Read more >>
While building a TypeScript project, you may need to define a set of constant values, like user roles, status codes, or payment methods. At this point, you might wonder: Should I use an Enum or a Type alias? This is a common question for both beginners and experienced developers. TypeScript provides several ways to define … Read more >>
In TypeScript, module loading is a fundamental concept. With the advent of ECMAScript 2015 (ES6), the import statement was introduced as a modern alternative to the traditional require function used in Node.js. In this blog, we will discuss a detailed comparison between require and import, their usage in TypeScript, and practical examples to help you … Read more >>
While working on a TypeScript project, you receive data from an API as an object. Before using any property from that object, you want to make sure the key actually exists to avoid errors. For example, you want to display the user’s email, but you’re not sure if the email key is present in the … Read more >>
Recently, while working on a TypeScript form, I needed to go through form fields that had different keys each time. The form wasn’t fixed, so I needed a flexible way to handle the data, but I still wanted to use TypeScript’s type safety. In this short tutorial, I’ll show you how to use Object.entries() to … Read more >>
While creating TypeScript-based web apps, you’ll often need to convert objects into JSON for sending data to APIs, saving it in local storage, or logging structured output. Although JSON.stringify usually works fine, it can be difficult when your objects have dates, functions, or special types. In this tutorial, we’ll learn how to convert TypeScript objects … Read more >>
When working on TypeScript applications, especially in larger projects, using switch statements with enums can significantly enhance the code’s maintainability. Recently, while building features for a web app that involved managing user roles and order statuses, I came to know about the use of enums in handling a fixed set of related values. I learned … Read more >>
While working on a TypeScript project, I had an enum that listed different user roles, such as Admin, Editor, and Viewer. I wanted to display all these roles in a drop-down menu on the webpage. To achieve this, I needed a way to retrieve all the values from the enum so I could loop through … Read more >>
When working on a large-scale TypeScript project, I got some runtime errors, all due to incorrect type usage. TypeScript adds static types to JavaScript, but just using it isn’t enough; you need to understand how its type-checking features work to catch bugs early and write safer code. In this tutorial, I’ll explain the different ways … Read more >>
While working on TypeScript, you may need to check if a variable is undefined to avoid errors in your code. For example, if you attempt to use a variable that has no value, your program may not function correctly. So, it’s important to know how to test if a variable is undefined before using it. … Read more >>
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