增量日取决于选择下拉引导程序datepicker

Here is sample code:-

以下是示例代码： -

<input class="cal" type="text" id="cal3">
 <select class="form_line_only form-control" name="ho_night" id="night">
                        <option selected> Night </option>
                        <option > 1 </option>
                        <option > 2 </option>
                        <option > 3 </option>
                        <option > 4 </option>
                        <option > 5 </option>
                        <option > 6 </option>
                        <option > 7 </option>
                        <option > 8 </option>
                        <option > 9 </option>
                        <option > 10 </option>
                      </select>
<input type="text" class="cal" id="cal4">
<input cl