Javascript
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  1. What does “javascript:void(0)” mean?

  2. How are variables allocated memory in JavaScript?

  3. Must you define a data type when declaring a variable in JavaScript?

  4. What are Arithmetic Operators in JavaScript?

  5. What are Comparison Operators in JavaScript?

  6. What are the differences between “untyped” & “dynamically typed” programming languages?

  7. Which data is stored in var and how its content is changed in JavaScript?

  8. How do I create dynamic variable names inside a JavaScript loop?

  9. What are Logical Operators in JavaScript?

  10. How is JavaScript an untyped language?

  11. How to replace all occurrences of a string in JavaScript?

  12. How to name variables in JavaScript?

  13. What are Variable Naming Conventions in JavaScript

  14. What are Reserved Words in JavaScript?

  15. Why JavaScript 'var null' throw an error but 'var undefined' doesn't?

  16. Why is 'class' a reserved word in JavaScript?

  17. How to use 'const' keyword in JavaScript?

  18. What is NaN in JavaScript?

  19. How to check if a variable is NaN in JavaScript?

  20. What is the use of declaring variables in JavaScript?
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