jQuery所有子元素下select標籤中選擇的對象，遍歷值，截取字符串中漢字，修改值和選中狀態

多個選擇框 

<td name="tutor_td"><select name="instructor_id" id="instructor_id">
                        <option th:value="0" >--請選擇--</option>
                        <option th:value="1" selected="selected" th:each="tutor : ${mainInstructor}"
                                th:text="${tutor == null?'':tutor.Account.name}"></option>
                    </select></td>

var tutor_select = $("td[name='tutor_td'] > select option:selected");

獲取所有td標籤下的select中被選中項，獲得結果如下 

js部分

window.onload = function () {
            TutorData = [
                {"tutorName": "Chen", "tutorCode": "8150357188"},
                {"tutorName": "Fujian", "tutorCode": "1902002742"},
                {"tutorName": "童清", "tutorCode": "1810000317"}
            ];
            
            //獲取所有td下select中option爲選中的jq對象
            var tutor_selected = $("td[name='tutor_td'] > select option:selected");

            $.each(TutorData,function (i,n) {

                var tutorName = n.tutorName;
                var tutorCode = n.tutorCode;

                // 追加option
                $("td[name='tutor_td'] > select").append(
                    "<option value="+tutorCode+">"+tutorName+"</option>"
                )

                $.each(tutor_selected,function (i,n) {
                    var tutor_name = $.trim(n.text);
                    var reg = /[\u4e00-\u9fa5]/g;
                    var name_ch = tutor_name.match(reg).join(""); //截取漢字
                    if (tutor_name == $.trim(name_ch)) {
                        n.value = tutorCode;  //修改option的value
                    }
                })
            })

            $.each(tutor_selected,function (i,n) {
                if (n.value == '1') {
                    //$(n).attr("selected",false) ;  //jq對象修改option的選中狀態
                    //n[i].selected = false;   //dom對象修改option的選中狀態
                    n.text = '--請選擇--';
                }
            })
        }