No offense, but not knowing BFS is kind of a red flag, even if its for a front-end position. It&#x27;s the most basic graph &#x2F; tree traversal algorithm there is. And you when you work with the DOM on a daily basis and use libraries that traverse for you its a good idea to have a basic understanding of whats going on under the hood. It&#x27;s like saying you&#x27;re a good programmer but not understanding basic concepts about memory management and whether things are stored on the stack or on the heap.