Mastering JavaScript's Hoisting Mechanism
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Questions and Answers

Which of the following statements correctly describes hoisting in JavaScript?

  • It moves function declarations to the top of their respective function or global scope (correct)
  • It moves both variable and function declarations to the top of their respective function or global scope
  • It moves variable and function declarations to the bottom of their respective function or global scope
  • It moves variable declarations to the top of their respective function or global scope
  • What is the difference between var and let/const in terms of hoisting?

  • var and let/const are not hoisted
  • var is hoisted to the top of the function scope while let/const are hoisted to the top of the block scope (correct)
  • var is not hoisted while let/const are hoisted to the top of the function scope
  • var and let/const are hoisted to the top of the function scope
  • What is the potential issue with relying on hoisting in JavaScript?

  • It can cause variables to be undefined at runtime (correct)
  • It can cause variables to be defined twice
  • It can cause functions to be defined twice
  • It can cause functions to be undefined at runtime
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