AngularJS Bytes Formatter Filter

angularjs-bytes-filter.js

app.filter('bytes', function() {
    return function(bytes, precision) {
        if (bytes == 0 || isNaN(parseFloat(bytes)) || !isFinite(bytes)) return '-';
        if (typeof precision === 'undefined') precision = 1;
        var units = ['bytes', 'KB', 'MB', 'GB', 'TB', 'PB'],
            number = Math.floor(Math.log(bytes) / Math.log(1024));
        return (bytes / Math.pow(1024, Math.floor(number))).toFixed(precision) +  ' ' + units[number];
    }
});