JS相仿Java String.format的函数

String.prototype.format = String.prototype.f = function () {
    var s = this,
        i = arguments.length;

    while (i--) {
        s = s.replace(new RegExp('\\{' + i + '\\}', 'gm'), arguments[i]);
    }
    return s;
};

"chen {0} hua".format("zeng")

"chen zeng hua"