After looking at everyone’s OA submissions, I noticed that the OA for the front-end position is slightly different from others: the first four questions should be the same. I won’t list them here; you can find specifics in other interview experience posts. The last question is to implement a publish-subscribe pattern, including three functions: subscribe/unsubscribe/publish, limited to JavaScript/TypeScript languages. This question is much simpler than the Idle servers one. Newcomer seeking insights; I want to see others’ interview experiences.