Dick Applebaum wrote:
> What if you want to change the attributes of some related items?
>
> Say you have table cells:
>
> <tr>
> <td id="col1">row 1 column 1</td>
> <td id="col2">row 1 column 2</td>
> </tr>
> <tr>
> <td id="col1">row 2 column 1</td>
> <td id="col2">row 2 column 2</td>
> </tr>
> *
> *
> *
>
> You can change the column width for all cells in the column with:
>
> document.getElementById("col1").style.width = 100;
Maybe you can, but it is illegal to have multiple elements with
the same id.
> You can't accomplish this with class because there is no
> getElementByClass method
whatever = document.getElementByTagName("tr");
for (var i = 0; i < whatever.length; i++) {
whatever[i].firstChild.style.width = 100;
}
Or if you insist on using a class:
whatever = document.getElementByTagName("tr");
for (var i = 0; i < whatever.length; i++) {
swapClass(whatever[i].firstChild, "some_100px_class");
}
Jochem
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