How to iterate through and modify each element

I have a readSourceList that I need to iterate through and modify the name with the word “bill” in front of them. Would I be able to do that within this function?:

DataExplorerUI.prototype.consumptionResponse = function (data) {
    var self = this;
    console.log(self.readerSourceList);
    $.each(data, function () {
        this.key = Enumerable.from(self.readerSourceList).first("$.f == " + this.key).name;
        $.each(this.values, function () {
            this.x = getUTCTimeInUserTimeZone(this.x);
        });
    });
};

Thanks