check checkbox jquery by id code example

Example 1: jquery set checkbox checked unchecked

//jQuery 1.6+ use
$('.checkbox').prop('checked', true);  //false for uncheck
//jQuery 1.5.x and below use
$('.checkbox').attr('checked', true);  //false for uncheck

Example 2: jquery check checkbox

$('.myCheckbox').prop('checked', true);
$('.myCheckbox').prop('checked', false);

Example 3: check a checkbox jquery

$('#grepperRocks').prop('checked', true);

Example 4: check checkbox based on value using jquery

$.each(arrayValues, function(i, val){

   $("input[value='" + val + "']").prop('checked', true);

});

Example 5: how to get checkbox value in jquery

var grenval = $('.green').val();
 $('.showCheckedValue').text(redval+'&'+grenval );