jquery 五種取 selected text的方法

console.log($('select[name="leave_type_auto_id"] option:selected').text());
console.log($('select[name="leave_type_auto_id"] option').filter(':selected').text());// optimized(maybe)
console.log($('select[name="leave_type_auto_id"]').children().filter(':selected').text());
console.log($('select[name="leave_type_auto_id"]').children('option').filter(':selected').text());// fastest(maybe)
console.log($('select[name="leave_type_auto_id"]').children('option:selected').text());
console.log($('select[name="leave_type_auto_id"]').children(':selected').text());// fastest(maybe)
有篇比較各種 selector速度的測試
http://jsperf.com/get-selected-option-text