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Function for Area + Perimeter
by: bs0d
Description:
This code sample show you how you can make a function to calculate the area and the perimeter of a rectangle. Using functions cuts down on the amount of coding, which allows your programs to execute faster.
Code:
<script type="text/javascript"> function area(a,b) { area = a * b; return(area); } function perimeter(c,d) { perimeter = 2 * c + 2 * d; return(perimeter); } w = window.prompt("Enter the length"); x = window.prompt("Enter the width"); thearea = area(w,x); theperimeter = perimeter(w,x); document.write("The area of a rectangle with a length of "+w+" and width of "+x+" is "+thearea+".<BR>"); document.write("The perimeter of the same rectangle, is "+theperimeter+".<BR><BR>"); </script>
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