how to get one class of an element in jquery code example

Example 1: get all classes of element jquery

var classList = $('#divId').attr('class').split(/\s+/);
$.each(classList, function(index, item) {
    if (item === 'someClass') {
        //do something
    }
});

Example 2: jquery: get class list using element id

$('#elementID').prop('classList').add('yourClassName')
$('#elementID').prop('classList').remove('yourClassName')