How to ace your next Javascript interview

📅 January 19, 2021

👷 Chris Power

Over my 10 year career I have worked at a ton of different companies. I have worked at large companies, small companies, I have also worked for myself as a freelance, or consultant software engineer. I have been in a lot of interviews, and I have given probably a hundred interviews. I can tell you from my experience that most interviews have the same general pattern. And if you can study certain things, you’ll ace your next interview.

Here is a quick video of what you need to do, in order to crush your next Javascript, React, Ember, whatever-framework-it-is, interview.


Here is the general pattern that I’ve seen for most interviews:

  1. There is always at least one “tricky” question: This tests your knowledge of the language of the job you’re applying for. It’s meant to weed out the people who really don’t know what they’re doing.

    • Closures
    • Binding this
    • Type coercion
    • Scope
    • Function Hoisting
    • etc…
  2. There is usually one algorithm type question: Ah, yes, the bane of all software engineers, algorithm questions. These aren’t necessary about specific algorithms like Dijkstra, or Binary Tree Searching, or anything like that. These are usually lower-level questions that test your knowledge in basic data structures and loops, recursion, etc.. And example: “Tell me if a sentence is a palindrome”

  3. You’ll have to write a small feature of an app: If the company hiring you is worth their salt, they’ll ask you a relevant question like: Can you code a small feature of an application? This is meant to test your real-world abilities. You’ll want to code lots and lots of stuff in order to get this right. Its super simple. I lost a job because I didn’t practice this one skill enough.

  4. For Javascript, You may have to write vanilla JS: Study up on your vanilla JS. Some companies like to throw you off your game by asking a question where you code a small program, but without any framework. You’ll want to know: event binding, vanilla JS stuff.

Here is some more information:

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