// Initializes a new instance of the StringBuilder class

// and appends the given value if supplied

function StringBuilder(value) {
    this.strings = new Array("");
    this.append(value);
}

// Appends the given value to the end of this instance.

StringBuilder.prototype.append = function (value) {
    if (value) {
        this.strings.push(value);
    }
}

// Clears the string buffer

StringBuilder.prototype.clear = function () {
    this.strings.length = 1;
}

// Converts this instance to a String.

StringBuilder.prototype.toString = function () {
    return this.strings.join("");
}