CodePen Embed - Functions part 1

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  <title>Function part 1</title>
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function sum(a, b) {
  // this function returns a result
  return a + b;
}

function displayInPage(message, value) {
  // this function does not return anything
  document.body.innerHTML += message + value + "<br>";
}

var result = sum(3, 4);
displayInPage("Result: ", result);

// we could have written this
displayInPage("Result: ", sum(10, 15));

This Pen is owned by Bipon Biswas on CodePen.

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