JSFiddle - React, Tailwind, and code Playground

JavaScript

alert(formats(14509900));

function formats(num)
        {

            var result = num;
            var val = num, sub = 0;
            if (val >= 1000000 && val <= 999999999)
            {
                sub = (val / 1000000);
               // sub = Math.round(sub);
                result = sub.toFixed(1) + "M";
            }
            else if (val >= 1000 && val <= 999999)
            {
                sub = (val / 1000);
                //sub = Math.Round(sub, 1, MidpointRounding.AwayFromZero); 
                // sub=Math.floor(sub) ;      
                result = sub.toFixed(1)+ "K";
            }

            return result;
}