JQuery表单验证不工作

我是一个非常新的使用JQuery验证插件来验证我的表单的人，但它不起作用。所有的ID都和脚本（CourseCode、CourseName等）完全相同。这个代码有什么错误吗

<form id="courseForm"  method="post">
<table>
            <tr>
                <td>
                    @if (ViewBag.Message != null)
                    {
                        <p>@ViewBag.Message</p>
                    }
                </td>
            </tr>

            <tr>
                <td>Code</td>
                <td>
                    <input type="text" name="CourseCode" id="CourseCode" />
                </td>
            </tr>
            <tr>
                <td>Name</td>
                <td>
                    <input type="text" name="CourseName" id="CourseName" />
                </td>
            </tr>
            <tr>
                <td>Creadit</td>
                <td>
                    <input type="text" name="Creadit" id="Creadit" />
                </td>
            </tr>
            <tr>
                <td>Description</td>
                <td>
                    <input type="text" name="Description" id="Description" />
                </td>
            </tr>
            <tr>
                <td>Department</td>
                <td>
                    <select name="DepartmentId" id="DepartmentId">
                        @foreach (var department in allDepartments)
                        {
                            <option value="@department.Id">@department.DeptName</option>
                        }
                    </select>

                </td>
            </tr>
            <tr>
                <td>Semester</td>
                <td>
                    <select name="SemesterId" id="SemesterId">
                        @foreach (var semester in allSemesters)
                        {
                            <option value="@semester.Id">@semester.SemesterName</option>
                        }
                    </select>

                </td>
            </tr>
            <tr>
                <td>
                    <input type="submit" value="Save" />
                </td>
            </tr>

        </table>
    </form>

       $(document).ready(function () {
           $("#courseForm").validate({
               rules: {

                   CourseCode: {
                       required: true,
                       minlength: 5
                   },
                   CourseName: {
                       required: true,

                   },
                   Creadit: {
                       required: true,
                       range: [0.5, 5]

                   },
                   Description: {
                       required: true

                   }

               },
               messages: {

                   CourseCode: {
                       required: "Please enter a Course Code",
                       minlength: "Your username must consist of at least 5 characters"
                   },
                   CourseName: {
                       required: "Please provide a Course Name",

                   },
                   Creadit: {
                       required: "Please provide a Creadit",
                       range: "Your creadit Range must be at least .5 to 5 ",

                   },
                   Description: {
                       required: "Please provide a Description"
                   }
               }
           });
       });    

---

尝试删除已安装的软件包，重新启动Visual Studio并安装更新的版本。我也有类似的问题。

表单的其余部分呢？您包括了jQuery验证脚本，对吗？您会遇到什么错误？没有错误。但是验证不起作用。。。i、 e我可以提交空值，尽管它在验证中是必需的。。你忘记插件了吗？您看到了哪些控制台错误？

       $(document).ready(function () {
           $("#courseForm").validate({
               rules: {

                   CourseCode: {
                       required: true,
                       minlength: 5
                   },
                   CourseName: {
                       required: true,

                   },
                   Creadit: {
                       required: true,
                       range: [0.5, 5]

                   },
                   Description: {
                       required: true

                   }

               },
               messages: {

                   CourseCode: {
                       required: "Please enter a Course Code",
                       minlength: "Your username must consist of at least 5 characters"
                   },
                   CourseName: {
                       required: "Please provide a Course Name",

                   },
                   Creadit: {
                       required: "Please provide a Creadit",
                       range: "Your creadit Range must be at least .5 to 5 ",

                   },
                   Description: {
                       required: "Please provide a Description"
                   }
               }
           });
       });