Answers for "how to know if a checkbox is checked in jquery"

How to check whether a checkbox is checked in jQuery?

//using plane javascript 
if(document.getElementById('on_or_off_checkbox').checked) {
    //I am checked
} 

//using jQuery
if($('#on_or_off_checkbox').is(':checked')){
    //I am checked
}

jquery checkbox checked value

if ($('#check_id').is(":checked"))
{
  // it is checked
}

check whether a checkbox is checked in jQuery

if ($('#grepperRocks').is(':checked')) {
	// this checkbox is checked
}

jquery checkbox checked

$("#general_no").prop( "checked", true);

checkbox jquery checked

var isExpanded = $(this).attr('checked') == "checked";