Learn JavaScript from Scratch JavaScript for Everyone - Functions: Reusing Code

The video tutorial introduces functions in JavaScript, emphasizing the DRY principle for code reuse. It covers creating functions, using external JavaScript files, and provides examples like a greeting function. The tutorial explains typecasting, handling data types, and understanding function types and return values. It concludes with a homework assignment to practice creating functions with parameters.

What does the acronym DRY stand for in programming, and why is it important?

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Explain how functions help in avoiding code duplication.

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What is the purpose of the 'return' statement in a function?

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Describe the concept of scope in relation to variables declared within a function.

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How can you pass parameters to a function, and what happens if you pass in a string instead of a number?

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What is typecasting, and how can it be useful when working with functions?

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Why is it important to understand the difference between a function and the result it returns?

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