按钮事件在 javascript 中未触发

Button event not firing in javascript

本文关键字:javascript 事件 按钮      更新时间:2023-09-26

我添加了一个jquery模式弹出窗口来保存特定设备的上传文件。模式弹出,取消按钮有效,但我不知道如何让保存按钮触发 onclick 事件......

这是我所做的:

     $(function () {
        $("#dialogCustUploads").dialog("destroy");
        $("#dialogCustUploads").dialog({
            title: "Upload Files",
            autoOpen: false,
            modal: true,
            resizable: false,
            width: 'auto',
            buttons: {
                Save: function () {
                    $(document.getElementById('<%=btnSave.ClientID %>')).click();
                },
                Cancel: function () {
                    $(this).dialog("close");
                }
            }
        });
    });
    function showCustUploads() {
        $(function () {
            $("#dialogCustUploads").dialog("open");
                    });
        $(".dialogCustUploads").parent().appendTo($("form:first"));  
    }

    <div id="dialogCustUploads" style="display: none">     
    <table style="width:100%;">
                <tr>
                    <td class="auto-style1">
                        <asp:Label ID="Label16" runat="server" Text="Client"></asp:Label>
                    </td>
                    <td>
                        <asp:Label ID="lblClientUploadName" runat="server"></asp:Label>
                    </td>
                </tr>
                    <tr>
                <td>
                    <asp:Label ID="Label19" runat="server" Text="Certificate no" ></asp:Label>
                </td>
                <td>
                    <asp:TextBox ID="txtCertificateNo" runat="server" Width="410px"></asp:TextBox>
                </td>
            </tr>
                <tr>
                    <td>
                        <asp:Label ID="Label14" runat="server" Text="Upload Option"></asp:Label>
                    </td>
                    <td>
                        <asp:DropDownList ID="lstUploadOption" runat="server" AppendDataBoundItems="True" Width="410px"></asp:DropDownList>
                    </td>
                </tr>
                <tr>
                    <td class="auto-style1">
                        <asp:Label ID="Label18" runat="server" Text="File"></asp:Label>
                    </td>
                    <td>
                        <asp:FileUpload ID="fuPath" runat="server" Width="408px" />
                        <br />
                        <asp:Label ID="lblMessage" runat="server" Text=""></asp:Label>
                    </td>
                </tr>
                <tr>
                    <td class="auto-style1"></td>
                    <td>
                        <asp:Button ID="btnSave" style="display: none;" runat="server" Text="Save" OnClientClick="btnSave_Click"  BackColor="White" />                          
                    </td>
                </tr>
            </table>
</div>

不确定我错过了什么或做错了什么...这是我第一次使用javascript...任何帮助将不胜感激!!!保存按钮不执行任何操作。

编辑

感谢大家的帮助!我已经更新了我的按钮以删除内联样式:

    <asp:Button ID="btnSave" runat="server" Text="Save" OnClientClick="btnSave_Click" ClientIDMode="Static" /> 

我尝试使用您提供给我的以下内容:

    1. $("#<%=btnSave.ClientID%>").click();
    2. document.getElementById('<%=btnSave.ClientID %>').click();
    3. <asp:Button ID="btnSave" style="display: none;" runat="server" Text="Save" OnClientClick="btnSave_Click" ClientIDMode="Static"  BackColor="White" /> 
     document.getElementById('btnSave').click();
    4. $('<%=btnSave.ClientID %>').trigger("click");

但它们都给了我一条错误消息,内容如下:

    Microsoft JScript runtime error: 'btnSave_Click' is undefined

当表单中断时,按钮如下所示:

    <input type="submit" name="ctl00$MainContent$btnSave" value="Save" onclick="btnSave_Click;" id="btnSave" /> 

我正在做的事情还有什么问题吗?

编辑

这是我的源代码:

    <script type="text/javascript">
    $(function () {
        $("#dialog").dialog("destroy");
        $("#dialog").dialog({
            title: "Message",
            autoOpen: false,
            modal: true,
            buttons: {
                Ok: function () {
                    $(this).dialog("close");
                }
            }
        });
    });
    function showMessage() {
        $(function () {
            $("#dialog").dialog("open");
        });
        return false;
    }
    $(function () {
        $("#dialogCustUploads").dialog("destroy");
        $("#dialogCustUploads").dialog({
            title: "Upload Files",
            autoOpen: false,
            modal: true,
            resizable: false,
            width: 'auto',
            buttons: {
                Save: function () {
                    document.getElementById('<%=btnSave.ClientID %>').click();
                },
                Cancel: function () {
                    $(this).dialog("close");
                }
            }
        });
    });
    function showCustUploads() {
        $(function () {
            $("#dialogCustUploads").dialog("open");
                    });
        $(".dialogCustUploads").parent().appendTo($("form:first"));  
    }
</script>

我的div 其中按钮单击事件:

    <div id="dialogCustUploads" style="display: none">     
    <table style="width:100%;">
                <tr>
                    <td class="auto-style1">
                        <asp:Label ID="Label16" runat="server" Text="Client"></asp:Label>
                    </td>
                    <td>
                        <asp:Label ID="lblClientUploadName" runat="server"></asp:Label>
                    </td>
                </tr>
                    <tr>
                <td>
                    <asp:Label ID="Label19" runat="server" Text="Certificate no" ></asp:Label>
                </td>
                <td>
                    <asp:TextBox ID="txtCertificateNo" runat="server" Width="410px"></asp:TextBox>
                </td>
            </tr>
                <tr>
                    <td>
                        <asp:Label ID="Label14" runat="server" Text="Upload Option"></asp:Label>
                    </td>
                    <td>
                        <asp:DropDownList ID="lstUploadOption" runat="server" AppendDataBoundItems="True" Width="410px"></asp:DropDownList>
                    </td>
                </tr>
                <tr>
                    <td class="auto-style1">
                        <asp:Label ID="Label18" runat="server" Text="File"></asp:Label>
                    </td>
                    <td>
                        <asp:FileUpload ID="fuPath" runat="server" Width="408px" />
                        <br />
                        <asp:Label ID="lblMessage" runat="server" Text=""></asp:Label>
                    </td>
                </tr>
                <tr>
                    <td class="auto-style1"></td>
                    <td>
                        <asp:Button ID="btnSave" runat="server" Text="Save" OnClick="btnSave_Click" /> 
                    </td>
                </tr>
            </table>
</div>

我通过单击网格视图中调用模式弹出窗口:

    <asp:GridView ID="gvDeviceCalibration" runat="server" CellPadding="10" Width="90%" AutoGenerateColumns="False"  BorderWidth="1px">
                            <HeaderStyle BackColor="#3A4F63" BorderWidth="1px" Font-Size="7pt" Wrap="False" ForeColor="White" />
                            <RowStyle BackColor="White" Wrap="True" />
                                <AlternatingRowStyle BackColor="#FFCC99" Wrap="True" />
                            <Columns>
                                <asp:BoundField DataField="ID" HeaderText="ID" ReadOnly="True" SortExpression="ID" ></asp:BoundField>
                                <asp:BoundField DataField="InstrumentType" HeaderText="Instrument Type" ReadOnly="True" SortExpression="InstrumentType"> <HeaderStyle Wrap="True" /></asp:BoundField>
                                <asp:BoundField DataField="Make" HeaderText="Make" ReadOnly="True" SortExpression="Make"> 
                                    <HeaderStyle Wrap="True" />
                                </asp:BoundField>
                                <asp:BoundField DataField="Location" HeaderText="Location" ReadOnly="True" SortExpression="Location"></asp:BoundField>
                                <asp:BoundField DataField="SubLocation" HeaderText="Sub Location" ReadOnly="True" SortExpression="Sub Location"> <HeaderStyle Wrap="True" /></asp:BoundField>
                                <asp:BoundField DataField="CalibrationIntervals" HeaderText="Calibration Intervals" ReadOnly="True" SortExpression="CalibrationIntervals"> <HeaderStyle Wrap="True" /></asp:BoundField>
                                <asp:BoundField DataField="SerialNo" HeaderText="Serial No" ReadOnly="True" SortExpression="SerialNo"> <HeaderStyle Wrap="True" /></asp:BoundField>
                                <asp:BoundField DataField="WorkingRange" HeaderText="Working Range" ReadOnly="True" SortExpression="WorkingRange"> <HeaderStyle Wrap="True" /></asp:BoundField>
                                <asp:BoundField DataField="Classification" HeaderText="Classification" ReadOnly="True" SortExpression="Classification"></asp:BoundField>
                                <asp:BoundField DataField="CalibrationDate" HeaderText="Calibration Date" DataFormatString="{0:yyyy/MM/dd}" ReadOnly="True" SortExpression="CalibrationDate">                                        
                                 <HeaderStyle Wrap="True" />
                                </asp:BoundField>
                                <asp:BoundField DataField="CalibrationHouse" HeaderText="Calibration House" ReadOnly="True" SortExpression="CalibrationHouse"><HeaderStyle Wrap="True" /></asp:BoundField>
                                <asp:BoundField DataField="Owner1s" HeaderText="Owner 1" ReadOnly="True" SortExpression="Owner1s"></asp:BoundField>
                                <asp:BoundField DataField="Owners2" HeaderText="Owner 2" ReadOnly="True" SortExpression="Owners2"></asp:BoundField>
                                <asp:BoundField DataField="CreatedBy" HeaderText="Created By" ReadOnly="True" SortExpression="CreatedBy"></asp:BoundField>
                                <asp:TemplateField HeaderText="Select">
                                    <ItemTemplate>
                                        <asp:ImageButton ID="UpdateStatus" runat="server" Height="22" BorderStyle="None" BackColor="Transparent"
                                            ImageUrl="~/Images/Sign-Select-icon.png" OnClick="SelectCalDevice_Click"  Width="22"  /><%-- --%>
                                    </ItemTemplate>
                                </asp:TemplateField>                                   
                                <asp:TemplateField HeaderText="Upload">
                                    <ItemTemplate>
                                        <asp:ImageButton ID="CustUploadFiles" runat="server" Height="22" BorderStyle="None" BackColor="Transparent"
                                            ImageUrl="~/Images/UploadFilesTrans.png" OnClick="SelectCustFiles_Click" Width="22"  /> 
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="View ">
                                    <ItemTemplate>
                                        <asp:ImageButton ID="CustViewFiles" runat="server" Height="25" BorderStyle="None" BackColor="Transparent"
                                            ImageUrl="~/Images/msgicon.png" ForeColor="Transparent"  Width="25" OnClick="ViewCustFiles_Click"  />
                                    </ItemTemplate>
                                </asp:TemplateField>
                            </Columns>
                            <EmptyDataTemplate>                                
                                <HeaderTemplate>There are no leads listed.</HeaderTemplate>
                            </EmptyDataTemplate> 
                        </asp:GridView>

这是我显示弹出窗口的SelectCustFiles_Click:

    protected void SelectCustFiles_Click(object sender, EventArgs e)
    {
        ImageButton lb = sender as ImageButton;
        GridViewRow row = (GridViewRow)lb.NamingContainer;
        txtRowID.Text = row.Cells[0].Text;
        lblClientUploadName.Text = row.Cells[1].Text;
        PopulateUploadOptions();
        //modalCustUploads.Show();
        this.Page.ClientScript.RegisterStartupScript(this.GetType(), "popUpMessage", "showCustUploads();", true);
    }

这是我尝试从脚本调用的点击事件:

    protected void btnSave_Click(object sender, EventArgs e)
    {
        // Before attempting to save the file, verify
        // that the FileUpload control contains a file.
        if (fuPath.HasFile)
        {
            // Get the size in bytes of the file to upload.
            int fileSize = fuPath.PostedFile.ContentLength;
            // Allow only files less than 2,100,000 bytes (approximately 2 MB) to be uploaded.
            if (fileSize < 45497717)
            {
                // Call a helper method routine to save the file.
                //SaveFile(fuPath.PostedFile);
                SaveFile();
                fuPath.Dispose();
                lbljQMessage.Text = "Update successful";
                this.Page.ClientScript.RegisterStartupScript(this.GetType(), "popUpMessage", "showCustUploads();", true);
                //modalCustUploads.Show();
            }
            else
                lblMessage.Text = "You did not specify a file to upload.";
        }
    }

我收到"btnSave"未定义的错误...

这是我正在使用的脚本:

    <script src="Scripts/jquery-1.7.1.min.js" type="text/javascript"></script>
   <script src="../Scripts/jquery-ui-1.8.17.custom.min.js" type="text/javascript"></script>

解决

我发现了问题...我将对话框附加到错误的位置。取而代之的是:

     function showCustUploads() {
        $(function () {
            $("#dialogCustUploads").dialog("open");
                    });
        $(".dialogCustUploads").parent().appendTo($("form:first"));  
    }

它应该是:

     function showCustUploads() {
        $(function () {
            $("#dialogCustUploads").dialog("open");
                    }); 
    }

取而代之的是:

     $(function () {
        $("#dialogCustUploads").dialog("destroy");
         $("#dialogCustUploads").dialog({
            title: "Upload Files",
            autoOpen: false,
            modal: true,
            resizable: false,
            width: 'auto',
            buttons: {
                Save: function () {
                  //  __doPostBack("<%=btnSave.UniqueID %>", "");
                    $($get("<%=btnSave.UniqueID %>")).click();
                },
                Cancel: function () {
                    $(this).dialog("close");
                }
            }
        });
    });

它应该是:

     $(function () {
        $("#dialogCustUploads").dialog("destroy");
        var dlgUploads = $("#dialogCustUploads").dialog({
            title: "Upload Files",
            autoOpen: false,
            modal: true,
            resizable: false,
            width: 'auto',
            buttons: {
                Save: function () {
                  //  __doPostBack("<%=btnSave.UniqueID %>", "");
                    $($get("<%=btnSave.UniqueID %>")).click();
                },
                Cancel: function () {
                    $(this).dialog("close");
                }
            }
        });
        dlgUploads.parent().appendTo(jQuery("form:first"));
    });

感谢大家的帮助!!欣赏它!

 document.getElementById('<%=btnSave.ClientID %>').click();
 Or
 $('#<%=btnSave.ClientID %>').click();

你做错了:

$(document.getElementById('<%=btnSave.ClientID %>')).click();

你混淆了jQuery和JavaScript选择器,你应该像jQuery这样做:

$('#<%=btnSave.ClientID %>').click();

或者像这样使用原生JavaScript:

document.getElementById('<%=btnSave.ClientID %>').click();

注意:您可以将 buttton ClientIDMode设置为 Static ,然后您也可以这样做:

<asp:Button ID="btnSave" style="display: none;" runat="server" Text="Save" OnClientClick="btnSave_Click" ClientIDMode="Static"  BackColor="White" /> 

在jquery中:

$('#btnSave').click();

或者在 JavaScript 中:

document.getElementById('btnSave').click();

尝试只使用

$("#<%=btnSave.ClientID%>").click();

并删除按钮的内联样式。

$('#<%=btnSave.ClientID %>').trigger("click"); // Make sure you use '#' as part of your jQuery selector

如果$('<%=btnSave.ClientID %>')指的是按钮,您可以通过检查$('<%=btnSave.ClientID %>').length == 1来检查它。

IT 应该是

document.getElementById('<%=btnSave.ClientID %>').click();

相反

$(document.getElementById('<%=btnSave.ClientID %>')).click();

因为你使用的是javascript,顺便说一句,jQuery是javascript,但是包装在$()里面会创建jQuery对象,你把两者结合起来了。

OnClientClick指定要执行的客户端 JavaScript 函数,但看起来您正在尝试使用它来执行服务器端方法。 OnClick将执行服务器端方法:

OnClick="btnSave_Click"

试试这个

$('<%=btnSave.ClientID %>').click();

尝试只使用

   $("#btnSave").click();

如果您正在尝试实现以下目标:

  1. 当用户单击 GridView (gvDeviceCalibration) 中的"上传图像"按钮时,将显示一个 jquery 模式(或弹出窗口)。

  2. 如果用户单击"取消",
  3. 则不执行任何操作,否则,如果用户单击"保存"按钮,则转到事件处理程序"btnSave_Click"

  4. 的代码

可能的解决方案(更改"gvDeviceCalibration"GridView 中的"上传"模板字段,如下所示):

<asp:TemplateField HeaderText="Upload">
<ItemTemplate>
    <asp:ImageButton ID="CustUploadFiles" runat="server" Height="22" BorderStyle="None" BackColor="Transparent" ImageUrl="~/Images/UploadFilesTrans.png" OnClick="btnSave_Click" Width="22" OnClientClick="return confirm('Are you sure you want to Save?')"  /> 
</ItemTemplate>
</asp:TemplateField>

在上面的代码中,我们制作了图像按钮,以通过"OnClientClik"事件进行确认,并通过"OnClick"事件执行保存方法的代码隐藏调用。

在这种情况下,您不需要使用"SelectCustFiles_Click"方法或"jquery modal"。

如有任何问题,请告诉我