Returns a random number between a specified range, optionally set to a fixed number of decimal places

getRandomNumber.js

/**
 * Returns a random number between a specified range, optionally set to a fixed number of decimal places
 * 
 * @author https://github.com/JamieMason
 * @param {Number} minimumValue 		The lowest value the random number can be
 * @param {Number} maximumValue 		The highest value the random number can be
 * @param {Number} decimalPlaces 		Optional value to set the number of decimal places
 * @type Number
 */
function getRandomNumber(minimumValue, maximumValue, decimalPlaces)
{
	var randomValue = minimumValue + (Math.random() * (maximumValue - minimumValue));
	
	return typeof decimalPlaces === 'undefined' ? 
		Math.round(randomValue) 
		: 
		randomValue.toFixed(decimalPlaces);
}