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JavaScript JavaScript Basics (Retired) Creating Reusable Code with Functions Giving Information to Functions

Ricardo Guerrero
Ricardo Guerrero
4,424 Points
Posted by Ricardo Guerrero
Ricardo Guerrero
4,424 Points

which is the better way to write the function below?

function calcAreaOfRect(lenght, width) { return lenght * width; }

console.log(calcAreaOfRect(3,5));

or

function getArea(width, length) { var area = width * length; return area; } console.log(getArea(10, 20));

Please elaborate if you can, thank you.

1 Answer

Matthew Long
Matthew Long
28,407 Points
Matthew Long
Matthew Long
28,407 Points

The fist one. 

function calcAreaOfRect(length, width) { 
  return length * width; 
}

You don't need to create a variable area that lives inside the function if all you're going to use it for is to return something immediately after. If you were going to use the variable area for something else inside the function then the second function might be the better choice.

Ricardo Guerrero
Ricardo Guerrero
4,424 Points
Ricardo Guerrero
Ricardo Guerrero
4,424 Points

Awesome, thanks for the feedback Matthew.