How to change a Checkbox attribute on click of parent <tr>

I need small suggestion from you.

Onclick of the checkbox attribute inside that should be changed.There is also a inside the

HTML Code:

 <table>
 <tr>
 <td class="answer"><input tabindex="4" type="checkbox" name="Dum1_4" id="Dum1_4" value="1"/></td>
 <td class="answerlabel"><label for="Dum1_4" id="Dum1_4_label"><table class="sample"><tr><td><img src="/ThumbsV2/2200000999-f.png"></td></tr><tr><td&开发者_StackOverflow社区gt;<b>Product 4</b></td></tr><tr><td>Product Description 4</td></tr><tr><td><b>Price 4</b></td></tr></table></label></td>
</tr>
<tr>
<td class="answer"><input tabindex="5" type="checkbox" name="Dum1_5" id="Dum1_5" value="1"/></td>
<td class="answerlabel"><label for="Dum1_5" id="Dum1_5_label"><table class="sample"><tr><td><img src="/ThumbsV2/2200001080-f.png"></td></tr><tr><td><b>Product 5</b></td></tr><tr><td>Product Description 5</td></tr><tr><td><b>Price 5</b></td></tr></table></label></td>
</tr>
</table> 

Here is my code:

$('.sample').click(function()
{       
row =$this.parents("td");
row.siblings().find("input:checkbox").attr("checked","checked" );
}
});
});

Please someone help me!

$('TABLE > TBODY > TR').click(function()
{
    $('input:checkbox', $(this)).prop("checked", "checked");
});

try

$('TABLE TBODY TR').click(function()
{
    $(this).find('input:checkbox').attr("checked", "checked");
});

There's a decent SO thread about manipulating checkboxes with jQuery

View example here

If you are trying to toggle the selected state, use the following:

jQuery 1.6+

$('table tbody tr').click(function() {
    $('input:checkbox', this).prop('checked', function(index, oldValue) {
        return !oldValue;
    });
});

jQuery pre-1.6

$('table tbody tr').toggle(function() {
    $('input:checkbox', this).attr('checked', 'checked');
}, function() {
    $('input:checkbox', this).removeAttr('checked');
});

Changing the value of the attribute to "checked" should work.

$('TABLE TBODY TR').click(function()
{
    $(this).find('input:checkbox').attr("checked", "checked");
});

See it in action.

try this

$(this).find('input:checkbox').attr("checked","checked"); 

With jQuery 1.6, the code is more readable:

$("table tbody tr").click(function(){
    $(this).find("input[type='checkbox']").prop("checked",true);
});

this was working fine for me:

$('#checkall').click(function() {
$('#cause').children().each(function() {    
                        $(this).find("input[type='checkbox']").prop("checked", $('#checkall').prop("checked"));
                    });
                });

just use it without the each function / check / uncheck all elements