Style a number

styleNumber.js

function styleNumber(number, precision) {
    if (number.toString().length >= 4) {
        var place = 1;
        if (precision !== undefined && precision === 1) {
            place = 10;
        } else if (precision === 2) {
            place = 100;
        }
        number = ((number / 100) / 10) * place;
        number = Math.round(number) / place + ' k';
    }
    return number;
}

use.md

styleNumber(number, [precision])

number: A number to style. Either a float or an integer.

precision: The optional number of decimal digits to output.

Example: http://jsfiddle.net/matthewbj/uSFDy/