The answer
Core syntax and types: variables, types, operators, control flow, functions, and arrays. Be able to write simple programs fluently. Everything else builds on this, so do not skip it even if it feels basic.
A Roadmap to Prepare for JavaScript Interviews
What is the first stage of JavaScript interview prep?
More FAQs in A Roadmap to Prepare for JavaScript Interviews
In stages: core syntax and types, scope and hoisting, functions and closures, async and the event loop, objects and prototypes, DOM and browser APIs, practice problems, and FAANG depth for top-tier. Build fundamentals before depth.
After core syntax, scope, and functions. Async is a huge part of modern JS and is tested heavily, but it builds on understanding functions and closures first. Do async after you have the foundation.
Because interviews require coding by hand and explaining out loud, not just reading. Practice problems on closures, async, event loop ordering, and prototypes train the actual skills interviews test, which study alone does not.
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