Nowadays, programming languages in a hi-tech advanced society allow the development of computer applications and information dissemination in many creative ways. One of the most useful programming languages that is closely connected with the Internet is JavaScript. In this paper, JavaScript usage will be covered by the example of a multimedia tutorial. The tutorial's production includes two types of design – instruction and multimedia design. Instructional design is connected with goals and learning strategies, while multimedia design refers to the integration of various types of media in the multimedia presentation of knowledge. Good quality of structuring statements and efficient executing of creative ideas by the projects' designers are possible with the development of programming code. There will be explained programming language throughout its general characteristics of main functions and methods that tutorial contains. By explaining the programming language through its basic characteristics related to the main functions and methods it contains, this paper will cover ways and purposes of using the programming language in the implementation of a multimedia project, based on the examples contained in the multimedia tutorial.