A JavaScript function to return AP-formatted numbers.

toAp

function toAp(num) {
    var numstripped = Number(num.toString().replace(/,|$|€|¥|£|%|(|)/g,''));
    
    if ( isNaN(numstripped) ) {
        console.log("Not a number, dude.");
    }
    else {
        if (numstripped < 10) {
            var apnums = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"];
            return apnums[numstripped];
        }
        else if (numstripped > 999999) {
            var striplength = Math.round(numstripped).toString().length;
            if (striplength >= 7 && striplength <= 9) {
                return ((numstripped / 1000000).toFixed(2) + ' million').replace('.00','')
                }
            else if (striplength >= 10 && striplength <= 12) {
                return ((numstripped / 1000000000).toFixed(2) + ' billion').replace('.00','')
                }
            else if (striplength >= 13 && striplength <= 15) {
                return ((numstripped / 1000000000000).toFixed(2) + ' trillion').replace('.00','')
                }
            else if (striplength >= 16 && striplength <= 18) {
                return ((numstripped / 1000000000000000).toFixed(2) + ' quadrillion').replace('.00','')
                }
            }
        else if (999 > numstripped <= 999999) {
            numstripped += ''
                , x = numstripped.split('.')
                , x1 = x[0]
                , x2 = x.length > 1 ? '.' + x[1] : ''
                , rgx = /(\d+)(\d{3})/;
            while (rgx.test(x1)) {
                x1 = x1.replace(rgx, '$1' + ',' + '$2');
                   }
                return x1 + x2;
        } 
        else {
            return numstripped;
        }
    }
}