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Diagram of multiple parameters

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Functions

  • Functions can have multiple parameters, they should be separated by a comma (and a space for readability)
  • The argument is a value passed to a function. The argument becomes the parameter for that specific function call.
  • The parameters of a function are only accessible inside that function. (This concept is called variable scope)
  • You can store/save the result of a function in a variable.

Storing functions

function double(number) {
    return number * 2
}

let firstResult = double(4)
let secondResult = double(10)

Chapter Recap

  • Functions can have multiple parameters, they should be separated by a comma (and a space for readability)
  • The argument is a value passed to a function. The argument becomes the parameter for that specific function call.
  • The parameters of a function are only accessible inside that function. (This concept is called variable scope)
  • You can store/save the result of a function in a variable.