Implemented a hashtable with array and internal buckets through a LinkedList. Spoke about collision, hashing functions. The interviewer asked he did not want to implement through a linkedlist but wanted to build another DS that was better than LinkedList. Went asking around the Big(0) complexity of the new to-be-implemented datastructure. Overall, the interview wasn't difficult, in my opinion it was irrelevant for a front-end role. I was expecting to talk more about JS, prototypal inheritance, etc.