Deleting rows in a table in HTML page containing data from XML

[cameokid]

Hi,

Here is the problem which i am facing. I am trying to delete rows (using nodes) containing XML data. I am doing this to add new set of data from XML file by using a dropdown selection.

I am using the below code.(This is just a part of the code)

tab = document.getElementById('maintable').getElementsByTagName("tbody")[0];
for(i=0;i<tab.childNodes.length;i++) {
tab.removeChild(tab.childNodes[i]);
}

tab.childNodes refers to all the <tr> tags. Though i am referring to all the rows in the loop, i am able to delete only alternate rows in the table in IE and the other alternate rows get deleted in firefox.

I need to delete all the rows. Can someone help me out with this?

[pronerd]

I think you may just need to reverse your loop.

Since object oriented code works by just passing a reffernce to the object you are alwaysing working with just one instance of an object, no matter how many of them you make. I think your code is removing a row, which then causes all the rows in the array to be reordered.

So if you for instance have a list or an array with four elements....

[0], [1], [2], [3]

and you remove its items one at a time. Your loop will remove the first item (index 0). Leaving you with .....

[0], [1], [2]

Then your loops moves up to index 1 which is now actually the second item in the array. Leaving you with ....

[0], [2]



So if you reverse your loop and remove them from the end you should get around this problem.

    tab = document.getElementById('maintable').getElementsByTagName("tbody")[0];
    for(i=tab.childNodes.length; i>0; i++) {
        tab.removeChild(tab.childNodes[i]);
    }

[cameokid]

Yeah that's great.

It works fine when you delete in the reverse order.

Thank you.