Dynamically add table row with calculation javascript

Question

my HTML look like this

<table>
    <tr>
        <td>Input 1</td>
        <td>Input 2</td>
        <td>Total</td>
        <td>&nbsp;</td>
        </tr>
            <tr>
        <td><input></td>
        <td><input></td>
        <td><input disabled></td>
        <td><button value="add">Add</button></td>
        </tr>
        <tr>
        <td>&nbsp;</td>
        <td>Grand Total</td>
        <td><input disabled ></td>
        <td>&nbsp;</td>
        </tr>
    </table>

i`m trying to calculate between two input and can add new row after that using javascrtpt... pls help me..

Which part do you have a problem with? Please show your existing code. — kapa
– kapa, Commented May 23, 2012 at 7:26
i dont have existing code.. the problem is im not good in javascript... i just want to calculate between two input, at the same time, i`m able to add new row, and make another calculation... thanks — Syazri Aris
– Syazri Aris, Commented May 23, 2012 at 7:32
as u can see from html above, ive got two input... for example input 1 = 10 input 2 = 2 total = sum of input 1 + input 2 if i press add button, im able to add new row and make another calculation.. thanks — Syazri Aris
– Syazri Aris, Commented May 23, 2012 at 7:34

Neji · Accepted Answer · 2012-05-23 08:52:02Z

1

you can do it in two ways give id to your table, access your table object then add a new row by table.innerhtnl+= your new rows tags. or also in this way

function addRow(tableID) {
        inp1 = document.getElementByID(input1).value;
        inp2 = document.getElementByID(input2).value;
        if(your Logic to check inputs)
        {
        var table = document.getElementById(tableID);

        var rowCount = table.rows.length;
        var row = table.insertRow(rowCount);

        var cell1 = row.insertCell(0);
        var element1 = document.createElement("input");
        element1.type = "checkbox";
        cell1.appendChild(element1);

        var cell2 = row.insertCell(1);
        cell2.innerHTML = rowCount + 1;

        var cell3 = row.insertCell(2);
        var element2 = document.createElement("input");
        element2.type = "text";
        cell3.appendChild(element2);
        }
    }

for demo visit here

edited May 23, 2012 at 8:52

answered May 23, 2012 at 7:35

Neji

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5 Comments

Neji Over a year ago

wht you really want plz explain its nt clear. the above code can help you to create a row dynamically in a table. whats your other requirement????

Syazri Aris Over a year ago

yes... the above code can create a row dynamically.. thank you... the problem is, at the same time, i want to make a calculation between 2 INPUT...

Neji Over a year ago

yeah modify the function, get the values in the above function of the two inputs, thn compare thm create some if logic then you can get the code workin exactly the way you want. !! do u want help on the logic too???

Syazri Aris Over a year ago

:) i hope u give me the fully working code... i appreciate your help.. thanks for understand my question... it seem like very easy to you..

Neji Over a year ago

check it nw you appear to be newbie to javascript. understand first the js , go through some tutorials then you will be able to do code in js

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