CODEWITHSUNDEEP
javascriptjquery
Jason Kelly
Jason Kelly

Reputation: 2655

Moving (highlighting) the last row in an HTML table using jQuery

I need your help.

How can the existing jQuery code below be modified such that, at the click of a button, I would be able to move to the last row in the html table and select (highlight) it? My way of thought was that it would be possible to get the row count, then using the row count, move the selection to the last row. I guess I was wrong because its not working :(

Im jQuery friendly please.

Here is the markup:

<!DOCTYPE html>

<html>

<head>

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> 

<style type="text/css">

.highlight {

    background-color: rgb(255,0,0);

}

</style>

<script type="text/javascript">

window.onload = function() {

var rowCount = $('#data >tbody >tr').length;


    var $tbody = $("#data tbody").on('click', 'tr', function() {
            highlight($(this));
    });


    $('#goto_prev').click(function() {
        var $prev = $tbody.find('.highlight').prev();
            highlight($prev);
    });


    $('#goto_next').click(function() {
        var $next = $tbody.find('.highlight').next();
            highlight($next);
    });

    $('#goto_last').click(function() {
            highlight(rowCount);
    });

    function highlight($row) {
            if ($row.length) {
                $tbody.children().removeClass("highlight");
                $row.addClass('highlight');
                $("#rownum").val($row[0].rowIndex);
            }
    }

}
</script>

</head>

<body>

<table id="data" border="1" cellspacing="1" cellpadding="1">

    <thead>
        <tr>
            <th>header1</th>
            <th>header2</th>
            <th>header3</th>
            <th>header4</th>
            <th>header5</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>data</td>
            <td>data</td>
            <td>data</td>
            <td>data</td>
            <td>data</td>
        </tr>
        <tr>
            <td>data</td>
            <td>data</td>
            <td>data</td>
            <td>data</td>
            <td>data</td>
        </tr>
        <tr>
            <td>data</td>
            <td>data</td>
            <td>data</td>
            <td>data</td>
            <td>data</td>
        </tr>
        <tr>
            <td>data</td>
            <td>data</td>
            <td>data</td>
            <td>data</td>
            <td>data</td>
        </tr>
        <tr>
            <td>data</td>
            <td>data</td>
            <td>data</td>
            <td>data</td>
            <td>data</td>
        </tr>
        <tr>
            <td>data</td>
            <td>data</td>
            <td>data</td>
            <td>data</td>
            <td>data</td>
        </tr>
    </tbody>
</table>
Row Number:
<br>
<input type="text" id="rownum" readonly>

<input type="button" id="goto_prev" value="prev">
<input type="button" id="goto_next" value="next">
<input type="button" id="goto_last" value="last">

</body>

</html>

Upvotes: 1

Views: 1320

Answers (1)

juvian
juvian

Reputation: 16068

Your highlight function takes a Jquery object as parameter, it won't work by sending index of row. You can solve it using this:

$('#goto_last').click(function() {
    highlight($("#data tr").eq(rowCount));
});

Upvotes: 1

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