String Repeat

string_repeat.js

// http://stackoverflow.com/a/5450113

// String prototyped
String.prototype.repeat = function(count) {
    if (count < 1) return '';
    var result = '', pattern = this.valueOf();
    while (count > 0) {
        if (count & 1) result += pattern;
        count >>= 1, pattern += pattern;
    }
    return result;
};

// Standalone
function repeat(pattern, count) {
    if (count < 1) return '';
    var result = '';
    while (count > 0) {
        if (count & 1) result += pattern;
        count >>= 1, pattern += pattern;
    }
    return result;
}