Swiss Number Format

Swiss Number Format

var swissNumberFormattter = function(s) {
    var numDec,
        decimals,
        returnVal;
    if(s < 10000) {
        returnVal = s;
    } else {
        if(Math.floor(s) === s) {
            numDec = 0;
        } else {
            numDec = s.toString().split(".")[1].length;
        }
        decimals = (s - Math.floor(s)).toFixed(numDec);
        returnVal = (Math.floor(s) / 1000).toFixed(3).toString().replace(".","'");
        if(numDec) {
            returnVal = returnVal + "." + decimals.split(".")[1];
        }
    
    }
    return returnVal;
}