This article is a crash course in writing maintainable JavaScript. We'll add features to a running example by iteratively following a simple principle: write a unit test, make it pass. Each test ...

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These JavaScript exercises are intended to complement the JavaScript content on The Odin Project (TOP). They should only be done when instructed during the course of the curriculum. Fork and clone ...

From simple test runners to complete testing frameworks, look to these proven tools to keep your JavaScript free of bugs The need to test JavaScript code is straightforward. How else to keep out ...

Meta hands its open-source Jest JavaScript testing framework to the OpenJS Foundation to let the project flourish as a community-led initiative.