As is detailed in its website, Jasmine is a behavior-driven development framework for testing JavaScript code: it does not depend on any other JavaScript frameworks, it does not require a DOM, and it has a clean, obvious syntax so that you can easily write tests. Jasmine is an easy-to-learn framework, and it comes with its own assertion functions, so we don't need to install any additional assertion library, such as Chai. Let's start installing it and exploring the building blocks—suites and test cases.