Phi golden ratio JavaScript

GoldenRatio.js

function computeGoldenRatio(widthOrHeight) {
			if (!widthOrHeight) {
				return {};
			}

			return {
				width: widthOrHeight,
				right: Math.round(widthOrHeight/ 1.61803),
				total: Math.round(widthOrHeight* 1.61803),
				left: widthOrHeight- Math.round(widthOrHeight/ 1.61803)
			};
		}