Dynamically checkbox checked javascript

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hello...
i have problem to solve on my script. somebody help me please..

i have script:

HTML

<!DOCTYPE html>
<html>
<head>
    <title>jQuery With Example</title>
    @Scripts.Render("~/bundles/jquery")
    <script type="text/javascript">
        $(function () {

            $('.chkview-1').change(function () {
                $('.chkitem-1').prop('checked', $(this).is(':checked'));
            });

            $(".chkitem-1").change(function () {
                $('.chkview-1').prop('checked', $('.chkitem-1:checked').length == $('.chkitem-1').length);
            });

            
        });
    </script>
</head>
<body>
    <table id="mytable">
        <tr>
            <td>
                View
            </td>
            <td>Insert</td>
            <td>Update</td>
            <td>Delete</td>
        </tr>
        <tr>
            <td>Administrator</td>
            <td>
                <input type="checkbox" class="chkview-1" />
            </td>
            <td><input type="checkbox" class="chkitem-1"/></td>
            <td><input type="checkbox" class="chkitem-1"/></td>
            <td><input type="checkbox" class="chkitem-1"/></td>
        </tr>
        <tr>
            <td>Free User</td>
            <td>
                <input type="checkbox" class="chkview-2" />
            </td>
            <td><input type="checkbox" class="chkitem-2"/></td>
            <td><input type="checkbox" class="chkitem-2"/></td>
            <td><input type="checkbox" class="chkitem-2"/></td>
        </tr>
    </table>
</body>
</html>

in this case, i'll explain litle of my code, chkitem-2 is chkitem=classid and 2 dynamically render role id in one row like administrator so i create classid="chkitem-2" or chkview-2.

in this code if i click chkview-1 all item chkitem-1 in row administrator checked true. can i create dynamically if i click chkview-2, all chkitem-2 also checked true in row free user?

somebody, help me please..

Posted 18-May-14 16:59pm

Ade.Ruyani.Z

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DamithSL · Accepted Answer · 2014-05-18T17:39:00

you can do as below

JavaScript

$('input[type=checkbox]').change(function (event) {
   var obj = $(event.target).attr('class');
   if (obj.indexOf("chkview") == 0) {
       var c1 = obj.replace("chkview", ".chkitem")
       $(c1).prop('checked', $(this).is(':checked'));
   } else if (obj.indexOf("chkitem") == 0) {
       var c11 = "." + obj;
       var c2 = obj.replace("chkitem", ".chkview");
       $(c2).prop('checked', $(c11 + ':checked').length == $(c11).length);
   }
});

DEMO[^]

Ade.Ruyani.Z · Accepted Answer · 2014-05-18T17:18:00

i solve by my self,

HTML

<!DOCTYPE html>
<html>
<head>
    <title>jQuery With Example</title>
    @Scripts.Render("~/bundles/jquery")
    <script type="text/javascript">
        $(function () {

            $('.chkview').change(function () {
                $(this).closest('tr').find('.chkitem').prop('checked', this.checked);
            });

            $(".chkitem").change(function () {
                var $tr = $(this).closest('tr'), $items = $tr.find('.chkitem');
                $tr.find('.chkview').prop('checked', $items.filter(':checked').length == $items.length);
            });

            
        });
    </script>
</head>
<body>
    <table id="mytable">
        <tr>
            <td>View</td>
            <td>Insert</td>
            <td>Update</td>
            <td>Delete</td>
        </tr>
        <tr>
            <td>Administrator</td>
            <td>
                <input type="checkbox" class="chkview chkview-1" />
            </td>
            <td>
                <input type="checkbox" class="chkitem chkitem-1" />
            </td>
            <td>
                <input type="checkbox" class="chkitem chkitem-1" />
            </td>
            <td>
                <input type="checkbox" class="chkitem chkitem-1" />
            </td>
        </tr>
        <tr>
            <td>Free User</td>
            <td>
                <input type="checkbox" class="chkview chkview-2" />
            </td>
            <td>
                <input type="checkbox" class="chkitem chkitem-2" />
            </td>
            <td>
                <input type="checkbox" class="chkitem chkitem-2" />
            </td>
            <td>
                <input type="checkbox" class="chkitem chkitem-2" />
            </td>
        </tr>
    </table>
</body>
</html>

Dynamically checkbox checked javascript

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