Easy JavaScript Interview Questions
This section contains basic JavaScript interview questions designed for beginners. Click on each question to see its detailed answer.
- What is JavaScript, and why is it used ? ✅
- What are variables in JavaScript, and how do you declare them ? ✅
- What are JavaScript data types ? ✅
- What is the purpose of the typeof operator in JavaScript ? ✅
- What are JavaScript objects and how do you create them ? ✅
- What is a prototype in JavaScript, and how does it work? ✅
- What are arrays in JavaScript ? ✅
- What is the purpose of the alert, prompt, and confirm methods in JavaScript ? ✅
- What are template literals in JavaScript, and how are they used ? ✅
- What is the purpose of the break and continue statements in JavaScript loops ? ✅
- What is the difference between undefined and not defined in JavaScript ? ✅
- What are JavaScript events, and how do you handle them ? ✅
- What is the difference between var, let, and const in JavaScript ? ✅
- What are Truthy and Falsy values in JavaScript ? ✅
- Explain scopes (Global, Local, Functional, Block). ✅
- Explain DOM Tree ? ✅
- What are arrow functions and how are they different from regular functions ? ✅
- What is the difference between null and undefined ? ✅
- What is the Difference Between == and === in JavaScript ? ✅
- How do loops work in JavaScript ? ✅