JavaScript, the widely-used programming language for web development, is known for its ability to create dynamic and interactive web pages, while its superset, TypeScript, introduced by Microsoft in 2012, adds static typing to facilitate the development of large-scale applications. Strapi, an open-source headless CMS, initially supported JavaScript but added TypeScript support in version 4.3.0, allowing developers to leverage the benefits of both languages. JavaScript, being fast and supported by numerous frameworks, is favored for its ease of use and extensive community support, though it poses security risks and inconsistency across browsers. TypeScript, with its static typing and enhanced features like interfaces and object-oriented programming, offers advantages in reducing errors and providing better development tools, but requires compilation and can be complex for those accustomed to dynamic typing. The article highlights the differences and use cases of JavaScript and TypeScript, particularly in the context of using them with Strapi, emphasizing the strengths and challenges associated with each language.