DSA, or Data Structures and Algorithms, is not necessarily a requirement for frontend developers. However, having a strong understanding of DSA can be beneficial for frontend developers in a number of ways.

For example, DSA concepts such as searching and sorting algorithms can be useful for optimizing the performance of frontend code, particularly when working with large data sets. In addition, a deep understanding of DSA can help frontend developers design and implement more efficient and scalable solutions to problems that they may encounter in their work.

That being said, it is not necessary for all frontend developers to have a deep understanding of DSA. It really depends on the specific requirements of the job and the individual developer's interests and goals. Some frontend developers may choose to focus more on design and user experience, while others may be more interested in the technical aspects of the job and want to develop their skills in DSA and other areas of computer science.