Answers for "jQuery is checkbox checked"

jQuery is checkbox checked

//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 check checkbox

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

jquery if checkbox checked

$( "SELECTOR" ).attr( "checked" )  // Returns ‘true’ if present on the element, returns undefined if not present
$( "SELECTOR" ).prop( "checked" ) // Returns true if checked, false if unchecked.
$( "SELECTOR" ).is( ":checked" ) // Returns true if checked, false if unchecked.

jquery checkbox checked value

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

jquery checkbox checked

$("checkbox").is(":checked")

jquery detect when a checkbox is checked

$(".checkbox").change(function() {
    if(this.checked) {
        //Do stuff
    }
});