Question

<table border=2>
    <tr class="here1 yes">
        <td>aaa1</td><td>bbb1</td>
    </tr>
    <tr class="here2 yes">
        <td>aaa2</td><td>bbb2</td>
    </tr>

    <tr class="here55 yes">
        <td>aaa3</td><td>bbb3</td>
    </tr>
</table>


<table border=2>
    <tr class="here1 yes">
        <td>ccc1</td><td>ddd1</td>
    </tr>
    <tr class="here2 yes">
        <td>ccc2</td><td>ddd2</td>
    </tr>

    <tr class="here55 yes">
        <td>ccc3</td><td>ddd3</td>
    </tr>
</table>


.yes:hover {
   background-color: red;
}

LIVE: http://jsfiddle.net/KzzW8/

The above table is generated with the following PHP:

 `<tr class="here<? echo $i ?> yes">`

I would like a mouseover on TR.here1 to turn the contents of any TR.here1 to RED where the subordinate TD is in the group: (aaa1, bbb1, ccc1, ddd1) regardless of which table it is in.

I believe I can use jQuery for this. Is this possible?

Answer 1

http://jsfiddle.net/KzzW8/1/

$('tr').hover(function() {
    var cls = $(this).prop('class').match(/here\d+/);
    if (cls) {
        $('.' + cls).addClass('hover');
    }
}, function() {
    $('.yes.hover').removeClass('hover');
});​

So you on hover event get the here* class and apply class .hover to all the rows with the same class. On hover out – you remove all the additionally added classes