Be a part of our community of 1M+ users who develop and demonstrate their skills on CodeSignal
4 courses
70 practices
5 hours
Transform your JavaScript applications by connecting them to the world! This learning path equips you with essential skills for API integration—from crafting HTTP requests to implementing secure authentication and building robust test suites.
In this course, you will learn how to interact with APIs using JavaScript. By the end of this course, you’ll understand how to make GET, POST, PUT, PATCH, and DELETE requests to an API, interpret API responses, and perform basic operations like creating, reading, updating, and deleting resources.
In this course, you will learn how to handle common scenarios when working with APIs in JavaScript. You’ll explore how to manage errors effectively, work with file uploads and downloads, handle paginated API responses, and use headers effectively. By the end of this course, you’ll have a deeper understanding of practical API techniques.
In this course, you will learn how to work with various API authentication methods using JavaScript. You’ll explore the basics of API Key authentication, manage sessions using cookies, and interact with APIs using JSON Web Tokens (JWTs). By the end of this course, you’ll be able to access and interact with protected APIs securely.
In this course, learn to write automated API tests with Mocha and Chai in JavaScript. You'll master setting up test cases, making API requests, asserting outcomes, using hooks for setup/teardown, and handling scenarios like CRUD operations and authentication. Build skills to ensure API reliability and functionality.
I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.
Faith Yim
Software Engineer
+14
It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.
Alex Bush
Full Stack Engineer
+9
I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.
Abbey Helterbran
Tech consultant
+8
I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.
Jonathan Miller
Senior Machine Learning Engineer
+12
I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!
