fahrenheit converter

Tinker work.

JavaScript

//get user input
var fahrenheit = prompt('Enter degrees fahrenheit: ');

//convert user input to an integer (number) 
// not crucial in js for small programs, but good to know the data type
fahrenheit = parseInt(fahrenheit);

//add formula to convert fahrenheit to celsius
var celsius = (fahrenheit - 32) * 5/9;

//convert again - from integer to a string
celsius = celsius.toString();
fahrenheit = fahrenheit.toString();

//output concatenation
document.write('You entered ' + fahrenheit + ' degrees fahrenheit, which is ' + celsius + ' degrees celsius');