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Question 1

Main Difference Function Declaration vs. Function Expression

Answer 1

You can call function declarations before they are defined but with function expressions it’s impossible. (Hoisting)

Question 2

When to use function declarations and when function expressions?

Answer 2

• Use function declarations when you want to create a function on the global scope and make it available throughout your code
• Use function expressions to limit where the function is available, keep your global scope light, and maintain clean syntax.