1. var checkText=jQuery("#select_id").find("option:selected").text(); //获取Select选择的Text2. var checkValue=jQuery("#select_id").val(); //获取Select选择的option Value3. var checkIndex=jQuery("#select_id ").get(0).selectedIndex; //获取Select选择的索引值4. var maxIndex=jQuery("#select_id option:last").attr("index"); //获取Select最大的索引值