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How to change background color of table row (tr) when input is ":focus"?

开发者 https://www.devze.com 2023-03-06 01:55 出处:网络
My HTML: <tr><td>Text</td><td><input type=\"text\" value=\"\"></td></tr>

My HTML: <tr><td>Text</td><td><input type="text" value=""></td></tr>

My CSS: input:focus tr{ background-color:#fff;}

I want to highlight the row in white when I'm writing text in the input field. I know "tr" is before "input", but is this possi开发者_Go百科ble to do in any way?

Thanks a bunch


No, sadly. See: Complex CSS selector for parent of active child

Here's how you could do it, though: http://jsfiddle.net/minitech/udzcp/


Using JQuery, it is very possible. Observe:

HTML

<table border="1" cellpadding="20">
    <tr>
        <td>Text</td>
        <td height="50" width="100" id="somename"><input type="text" value="" id="mirza"></td>
    </tr>
    <tr><td>&nbsp;</td><td>&nbsp;</td></tr>
    <tr><td>a&nbsp;</td><td>1&nbsp;</td></tr>
    <tr><td>a&nbsp;</td><td>1&nbsp;</td></tr>
    <tr><td>a&nbsp;</td><td>1&nbsp;</td></tr>
    <tr><td>a&nbsp;</td><td>1&nbsp;</td></tr>
    <tr><td>a&nbsp;</td><td>1&nbsp;</td></tr>
</table>

CSS

.highlightedRow { background-color: orange; }

Jquery

$('input').focus(function() {
    $(this).parent().parent().addClass('highlightedRow');
});

$('input').blur(function() {
    $(this).parent().parent().removeClass('highlightedRow');
});


Sadly, there's no way to style the parent element with CSS, so you'll have to use javascript.


This is good for when you are generating a lot of similar rows (looping through large datasets, etc): Script:

function rowSet(data_id){
    document.getElementById('row_' + data_id).style.backgroundColor = 'blue';
}
function rowReset(data_id){
    document.getElementById('row_' + data_id).style.backgroundColor = '';
}

Body:

<body>
    <form>
        <table>
            <tr id="row_#data_id#">
                <td><input name="input1_#data_id#" onFocus="rowSet(#data_id#);" onBlur="rowReset(#data_id#);"></td>
                <td><input name="input2_#data_id#" onFocus="rowSet(#data_id#);" onBlur="rowReset(#data_id#);"></td>
            </tr>
        </table>
    </form>
</body>

You could also use currentRow, or whatever you prefer.


This jquery code should do it:

$('input').focus(function() {
    $('tr').css("background-color", "#c00");
});

Demo here

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