[javascript] Select a row from html table and send values onclick of a button

I have HTML table where I need to select a row and send its first cell ID to a button and onclick of the button send the selected value to a function in Javascript. How can I achieve this?

test.html :

<table id="table">
        <tr>
            <td>1 Ferrari F138</td>
            <td>1 000€</td>
            <td>1 200€</td>

        </tr>
        <tr>
            <td>2 Ferrari F138</td>
            <td>1 000€</td>
            <td>1 200€</td>

        </tr>
        <tr>
            <td>3 Ferrari F138</td>
            <td>1 000€</td>
            <td>1 200€</td>

        </tr>
    </table>
    <input type="button" id="tst" value="OK" onclick="fnselect()" />

test.js :

var table = document.getElementById('table'),
    selected = table.getElementsByClassName('selected');
table.onclick = highlight;
function highlight(e) {
    if (selected[0]) selected[0].className = '';
    e.target.parentNode.className = 'selected';
}
function fnselect(){
var $row=$(this).parent().find('td');
    var clickeedID=$row.eq(0).text();
    alert(clickeedID);
}

test.css :

td {border: 1px #DDD solid; padding: 5px; cursor: pointer;}

.selected {
    background-color: brown;
    color: #FFF;
}

This is a fiddle of my problem JSFIDDLE

I need to send the selected row's first cell value to a javascript function. But when the user selects a row and clicks on 'OK' button I should send the value to the function. How to do this?

In my case $(document).ready(function() was missing. Try this.

$(document).ready(function(){   
("#table tr").click(function(){
       $(this).addClass('selected').siblings().removeClass('selected');    
       var value=$(this).find('td:first').html();
       alert(value);    
    });
    $('.ok').on('click', function(e){
        alert($("#table tr.selected td:first").html());
    });
});

This below code will give selected row, you can parse the values from it and send to the AJAX call.

$(".selected").click(function () {
var row = $(this).parent().parent().parent().html();            
});

check http://jsfiddle.net/Z22NU/12/

function fnselect(){

    alert($("tr.selected td:first" ).html());
}

You can access the first element adding the following code to the highlight function

$(this).find(".selected td:first").html()

Working Code:JSFIDDLE