Checked checkbox value in multiple chekcbox in javascript

 Here a quick example.

 <input class='try' type="checkbox" name="device" id="1_2" value="1" />
 <input class='try' type="checkbox" name="device" id="10_4" value="2" />
 <input class='try' type="checkbox" name="device" id="5_6" value="3" />
 <input class='try' type="checkbox" name="device" id="4_0" value="4" />
 <input class='try' type="checkbox" name="device" id="8_9" value="5" />
 <input class='try' type="checkbox" name="device" id="3_4" value="6" />

$('.try').click(function() {
    var value = $(this).val();
   var idd= $(this).attr('id');
   var explode = idd.split('_');
    alert('Value before:' +value + ' - Value after:' + value);
});

Example here 

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