U.Helper

$('select option[value=4]').attr('selected',1);

$('select option[value="4"]').attr('selected',1);

$('select option[value="4"]').attr('selected', 1);

$('select option[value="4"]').attr('selected', true);

$('select option[value="4"]').attr({selected: !0});

document.querySelector("select option[value='4']").selected != false;