Question

I’m using this function to total the sum of all values in a column. I would like to have the results display in an input box as well as to the cell that it currently does. I’m just a little stuck on the syntax for mixing the two since one needs to reference a value.

JQuery

$(document).ready(function(){
$('#front_finish, #back_finish').change(function(){
    function tally (selector) {
        $(selector).each(function () {
            var total = 0,
                column = $(this).siblings(selector).andSelf().index(this);
            $(this).parents().prevUntil(':has(' + selector + ')').each(function () {
                total += parseFloat($('td.sum:eq(' + column + ')', this).html()) || 0;
            })
            $(this).html(total);
        });
    }
    tally('td.total');
    });
});

Input

<input type="text" name="glass_total" id="glass_total" value="0" />

Table

<table id="data">
<tr>
    <th>Finish</th>
    <th>Pattern</th>
    <th>Price</th>
</tr>
<tr>
    <td>Front Finish:</td>
    <td><span id="front_finish_name">Mirror</span></td>
    <td class="sum" id="front_finish_price">15</td>
</tr>
<tr>
    <td>Front Pattern:</td>
    <td><span id="front_pattern_name"></span></td>
    <td class="sum" id="front_pattern_price"></td>
</tr>
<tr>
    <td>Back Finish:</td>
    <td><span id="back_finish_name">Mirror</span></td>
    <td class="sum" id="back_finish_price">15</td>
</tr>
<tr>
    <td>Back Pattern:</td>
    <td><span id="back_pattern_name"></span></td>
    <td class="sum" id="back_pattern_price"></td>
</tr>
<tr>
    <th colspan="2" align="right">Total</th>
    <td class="total"></td>
</tr>

Answer 1

I think your jquery may be a little off. Try this:

$(document).ready(function () {
    $('#front_finish, #back_finish').change(function () {
        var total = 0, temp;
        $("#data td.sum").each(function () {
            temp = $(this).html();
            if (!temp) {
                return;
            }
            temp = parseFloat(temp);
            if (isNaN(temp)) {
                return;
            }
            total += temp;
        });
        $("#data td.total").html(total);
        $("#glass_total").val(total); // if you want it in the textbox
    });
});