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gaboelnuevo/calculate-aspect-ratio.js

Created September 3, 2015 22:30
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Calculate a ratio from two numbers
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calculate-aspect-ratio.js
//calculate aspect ratio
// Via: http://stackoverflow.com/questions/1186414/whats-the-algorithm-to-calculate-aspect-ratio-i-need-an-output-like-43-169
function gcd (a, b) {
return (b == 0) ? a : gcd (b, a%b);
}
var w = screen.width;
var h = screen.height;
var r = gcd (w, h);
console.log("Dimensions = " + w + " x " + h);
console.log("Aspect ratio = " + w/r + ":" + h/r);
@jdolearydl
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Note: This will exceed maximum calls stack size if one of the arguments is NaN.

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