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  • Introduction
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  • Syntax & Comments
  • Variables
  • Data Types: Basics
  • Data Types: Conversion
  • Data Types: Advanced
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  • Numbers & Math
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  • ES6+ Modern
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  1. Docs
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  5. প্রশ্ন/উত্তর
  7. Basics
JavaScriptBasics

JavaScript Basics — প্রশ্ন/উত্তর

JavaScript-এর মৌলিক ধারণা — ভেরিয়েবল, hoisting, ডেটা টাইপ আর লুকানো সম্পর্ক।

  1. Q1. What is the difference between var, let, and const in JavaScript?
  2. Q2. Explain the concept of hoisting in JavaScript.
  3. Q3. What are the primitive data types in JavaScript?
  4. Q4. What is the difference between == and === in JavaScript?
  5. Q5. Explain how closures work in JavaScript with an example.
  6. Q6. What is the difference between null and undefined?
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