jQuery adding numeric input dynamicly

This might sound stupid..

I have this code:

switch (newcell.childNodes[1].type)
        {
            case "text":
                newcell.childNodes[1].value = "";
                break;
            case "number":
                newcell.childNodes[1].value = "";
                break;
            case "select-one":
                newcell.childNodes[1].selectedIndex = 0;
                break;

This is a little piece of code for an add/delete row functionallity I'm making. The row contains inputs.

Well, I manage to generate new raw withh all inputs except this one:

<td><input type="number" /></td>

I think the issue is here: case "number":. How do I make reference in my JS to the type="number" input?

Thank you for the help!

ADDING MORE INFO

My HTML code:

 <tbody id="dataTable">                       
                    <tr class="trBody">
                        <td>
                            <asp:DropDownList ID="FeeClass" runat="server" name="feeClass">
                                <asp:ListItem Text="" Value=""></asp:ListItem>
                            </asp:DropDownList>
                        </td>
                        <td><input type="text" value=""/></td>
                        <td><input type="number" class="numberInput" value=""/></td>
                        <td><button onclick="deleteRow(this)">Remove</button></td>
                    </tr>  
             </tbody>    

My JS code:

function addRow(dataTable) {

    var table = document.getElementById("dataTable");

    var rowCount = table.rows.length;
    var row = table.insertRow(rowCount);
    row.id = row.uniqueID;
    row.id = "row" + rowCount;
    var rowID = row.id;
    var colCount = table.rows[0].cells.length;

    for(var i = 0; i < colCount; i++) {

        var newcell = row.insertCell(i);

        newcell.innerHTML = table.rows[0].cells[i].innerHTML;
        if (i == colCount-1){
            newcell.childNodes[0].setAttribute('id', "rB" + rowCount);
        }
        newcell.childNodes[1].name = newcell.childNodes[1].id + rowCount;

        //alert(newcell.childNodes);
        switch (newcell.childNodes[1].type)
        {
            case "text":
                newcell.childNodes[1].value = "";
                break;
            case "number":
                newcell.childNodes[1].value = "";
                break;
            case "select-one":
                newcell.childNodes[1].selectedIndex = 0;
                break;
        }
    }
    event.preventDefault();
}

It generates the new row and stops at the number input. Genrates the dropdown, the text input and stops...