Working with dynamically created input arrays in jQuery

Question

I have a dynamic form with the following fields

<tr>
 <td><input name = "qty[]" /></td>
 <td><input name = "color[]" /></td>
 <td><input name = "price[]" /></td>
 <td><input name = "total[]" /></td>
</tr>

I can dynamically add as many rows as I want. What I would like to accomplish is having total = qty*price for each row with a click of a button. Any suggestions?

rahul · Accepted Answer · 2011-03-07 04:24:17Z

3

Modified your HTML a bit

<tr>
 <td><input name = "qty[]" /></td>
 <td><input name = "color[]" /></td>
 <td><input name = "price[]" /></td>
 <td><input name = "total[]" /></td>
 <td><input type='text' name='total' /></td>
</tr>

jQuery code

$("#button1").click(function(){
    var trElems = $("#tab tr");

    trElems.each(function(){
        var qty = $(this).find("input[name='qty[]']").val();
        var price = $(this).find("input[name='price[]']").val();
        var total = parseFloat (qty) * parseFloat (price);

        $(this).find("input[name='total']").val(total);
    });

See a working demo

edited Mar 7, 2011 at 4:24

answered Mar 7, 2011 at 4:05

rahul

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2 Comments

pistolshrimp Over a year ago

thank you. This is working exactly the way I want. Curious, why did you add the second "total"?

rahul Over a year ago

oops, I din see your total.:)

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