Javascript Number Abreavtion

abreavtion.js

/**
 * Parse an aberration of a number
 *
 * @author Noah Halstead <nhalstead00@gmail.com>
 * @param {string} value Abbreviated Number
 * @return {number} amount
 */
function unabbreviateNumber(value = "") {
	value = value.toLowerCase().replace(/,/g, "")
	const reg = /([0-9\.]+)(k|m|b|t|q|)/i;

	if ((m = reg.exec(value)) !== null) {
		let num = parseFloat(m[1]);

		switch(m[2]) {
			case "": break;
			case "k":
				num = num * (10 ** 3);
				break;
			case "m":
				num = num * (10 ** 6);
				break;
			case "b":
				num = num * (10 ** 9);
				break;
			case "t":
				num = num * (10 ** 12);
				break;
			case "q":
				num = num * (10 ** 15);
				break;
		}
		return num;
	}
	return 0;
}

/**
 * Convert a number into an Abbreated Number
 *
 * @link https://stackoverflow.com/a/10601315/5779200
 * @param {number} amount
 * @return {string} Abbreated Number
 */
function abbreviateNumber(value) {
	var newValue = value;
	if (value >= 1000) {
		var suffixes = ["", "k", "m", "b","t"];
		var suffixNum = Math.floor( (""+value).length/3 );
		var shortValue = '';
		for (var precision = 2; precision >= 1; precision--) {
			shortValue = parseFloat( (suffixNum != 0 ? (value / Math.pow(1000,suffixNum) ) : value).toPrecision(precision));
			var dotLessShortValue = (shortValue + '').replace(/[^a-zA-Z 0-9]+/g,'');
			if (dotLessShortValue.length <= 2) { break; }
		}
		if (shortValue % 1 != 0)  shortValue = shortValue.toFixed(1);
		newValue = shortValue+suffixes[suffixNum];
	}
	return newValue;
}