In this book, you will learn about the most-used data structures and algorithms. However, why use JavaScript to learn about data structures and algorithms? We have already answered this question. JavaScript is very popular and is appropriate to learn about data structures because it is a functional language. Also, this can be a very fun way of learning something new as it is very different from (and easier than) learning about data structures with a standard language such as C or Java. And who said data structures and algorithms were only made for languages such as C and Java? You might need to implement some of these languages while developing for the frontend as well.

Learning about data structures and algorithms is very important. The first reason is that data structures and algorithms can solve the most common problems efficiently. This will make a difference to the quality of the source code you write in the future (including performance; if you choose the incorrect data structure or algorithm, depending on the scenario, you may have some performance issues). Secondly, algorithms are studied in college together with the introductory concepts of computer science. And thirdly, if you are planning to get a job in the greatest IT (Information Technology) companies (such as Google, Amazon, Ebay, and so on), data structures and algorithms are the subjects of interview questions.

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