JavaScript Concepts : Hoisting, Closure, Object, Array, Symbols etc. There will be multiple question in above concept like Program + output + your understanding ( definition ).
Javascript Developer Interview Questions
1,200 javascript developer interview questions shared by candidates
What steps do you take when you're unsure how to complete a task?
You have 10 boxes of balls (each ball weighing exactly 10 gm) with one box with defective balls (each one of the defective balls weigh 9 gm). You are given an electronic weighing machine and only one chance at it. How will find out which box has the defective balls?
What is closure
Event loop SOLID principles Currying - sum(1)(2)() - implementation Const Person = { Name Age setName() => arrow setAge: function() } console(Person.name) console(Person.age) Websocket, Polling requestAnimationFrame() RBAC, theme - context or store Union, intersection Git rebase, merge Partial, omit Testing library - jest, rtl Directives, composition Using ref - change button color useHistory - maintain prev and next array.map(a => a < 3) React fiber Prioritisation in react - how does it happen ssr, nextjs Liskov, IoC Code review Performance optimization - initial load 10s Garbage collection Memory optimization Critical rendering path when you use custom hook how would you maintain reference when its used across multiple components, something to do with useEffect Proto and prototypal inheritance Lifecycle hooks React versions Owasp top 10 Cors Xss How react handles xss V8 engine - implementation
CSS animation transition. Html semantics.
Arrays(Write a function to Return the second largest number) Ask me about Reactjs, Nodejs and some general JavaScript questions.
Diferencia entre let y var
internal concept about javascript like closure, etc
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