create a jquery function that adds points into total-points column in MySQL table based on comparion

jquery comparison of rows from a user prediction table and a result a results table. If the values are identical i want to award 3 point to user and add to total points.

$('#pred_table tr').each(function(){

            var currentRowHTML=$(this['Home_Score']&&this['Away_Score']).html();

            $('#fixure tr').each(function(){
                if($(this['Home_Score']&&this['Away_Score']).html()===currentRowHTML){


    //not sure where to begin with the doCalculation function

                    $(this).doCalculation("award 3 points into total points in another
                    table in database");

            }
        });
    });