Algorithms are a big puzzle to web-developers ( if they are not graduate CS ). There are lot of online discussions about them. Should we learn it or not ? My opinion is that we shouldn't try to master them, cause that leads to frustration.
Algorithms can be very complex, and much of them are unnecessary in everyday web programming. Since web languages are mostly scripting and interpreted, there is really no need to learn about complex memory allocation, garbage collection and other low-level things. Instead, we should adopt some of the major concepts that can be found in every programming language.
These concept deals with control flow, data manipulation and in general they can help you to think and code more productively and efficiently.
Nicholas Zakas has a page with implementation of classic computer science algorithms in Javascript. It's great because here you can find a collection of classic and well known algorithms, together with great explanation and implementation.
http://www.nczonline.net/blog/tag/computer-science/
Happy coding.
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