Answers for "how to set a checkbox checked in jquery"

jquery set checkbox checked

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

jquery 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 checkbox set checked

//For jQuery 1.6 and above
$('#myCheckBoxID').prop('checked', true);
//For jQuery Before 1.6
$('#myCheckBoxID').attr('checked','checked');

checkbox is checked jquery

$(your_checkbox).is(':checked');

how to set checkbox checked

<input type="checkbox" name="vehicle3" value="Boat" checked>

#If if helps you give it Thumbs up