Javascript
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  1. What is the difference between Object.seal() and Object.freeze() in JavaScript?

  2. What is the use of proxy() object in JavaScript?

  3. What is a pure function in JavaScript?

  4. How to know whether an object is sealed or not in JavaScript?

  5. How to remove html tags from a string in JavaScript?

  6. How to avoid namespace pollution in JavaScript?

  7. What is the difference between for...in and for...of loops in JavaScript?

  8. How to count a number of words in given string in JavaScript?

  9. How to change css styles of elements in JavaScript?

  10. How to add a number and a string in JavaScript?

  11. How to access a function property as a method in JavaScript?

  12. How to hide e-mail address from an unauthorized user in JavaScript?

  13. What is the use of weakSet.has() method in JavaScript?

  14. What is the use of Atomics in JavaScript?

  15. Describe pass by value and pass by reference in JavaScript?

  16. How to empty an array in JavaScript?

  17. How to check whether a key exist in JavaScript object or not?

  18. How to check if a variable is an array in JavaScript?

  19. How to get a number of vowels in a string in JavaScript?

  20. What is Debouncing in JavaScript?
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