Modify the CSS of a table cell using inline script without the need for specifying an id, class, or content

While working with an ASP.NET MVC helper method to create a webgrid, I encountered the need to dynamically change the colors of specific table rows. Unfortunately, I realized that I couldn't directly access the td tag to modify its properties or assign an id.

In my attempt to solve this issue from the backend, I considered injecting a script within the td's content in order to conditionally alter its color. However, my initial approach using jQuery didn't yield the desired results:

<script>
        $(this).css("background-color", "red !important");
    </script>
    

Dealing with Javascript being relatively new to me, I'm now seeking assistance on alternative methods to achieve this task. While browsing through related questions, I noticed suggestions involving 'contains', 'onclick' handlers, or utilizing ids which weren't applicable to my scenario.

To provide more context - imagine having a basic HTML table structure as follows:


        <table>
            <tr>
                <td>
                    How can one insert a script here to dynamically change the color of this table cell without knowing its id?
                </td>
            </tr>
        </table>
    

Answer №1

One helpful technique is:

<script type="text/javascript">
    var allTD = document.getElementsByTagName("td");
</script>

This code snippet will give you access to every single td element within your HTML document.

From there, it's simply a matter of looping through the collection and making adjustments to the styling of each element.

For further details, check out the Mozilla Developer Network.

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