I had two phone interviews and was rejected due to a lack of JavaScript knowledge. I think it was fair. To be honest, I have Facebook and Google interviews coming up, and my preparation is more focused on my algorithm skills than my JavaScript skills. So, of the basic CSS, HTML, and JS questions they asked before they actually started with the coding part, I missed about 70% of them.

I am a React developer, so I don't work with vanilla JS that often. The interview was really easy, though. If you have minimal algorithm knowledge and focus on JS, CSS, and HTML, you will make it easily. All the questions they asked can be found on Google; nothing was out of the ordinary.

My recruiter told me I was reeeaaalllly close to getting it, lol. I felt that.

One algorithm question with a hashmap (easy).

Three JavaScript event handler functions and DOM manipulation (also easy).

HTTP requests, CSS preprocessors, and HTML basics.