Ajax 실패 기능 매개변수

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this.GetOrderList = function (customerId) {
    var self = this;
    $.post('MySuperServer.aspx', { customerId: customerId })
    .done(function (dataStr) {
        var orderList = jQuery.parseJSON(dataStr);
        self.process(orderList);
    })
    .fail(function (jqXHR, textStatus, error) {
        console.log("Post error: " + error);
    });
}