javascript – ‘Sys’未定义 – Ajax – master和contentpages ASP.NET 4.0

我已经有这个问题已经有一段时间了,并尝试了各种解决方案,使用各种标签编辑Webconfig.

我在我的网页上使用Updatepanels,计时器和AJAX.(可能是AJAX会引发错误吗？)

我真的不知道如何定义问题,因为我真的不知道在哪里追踪它.

我在主页面上放置了一个onload(不知道那是不是正确的)
下面是一些标记代码和我认为会引发错误的Javascript 代码.

母版：

<!DOCTYPE html>
<html lang="en">
<head runat="server">
    <Meta charset="utf-8" />
    <title><%: Page.Title %> - </title>
    <link href="~/Content/Site.css" rel="stylesheet" /> 
    <link href="~/Content/BarChart.css" rel="stylesheet" />
    <link href="favicon.ico" rel="shortcut icon" type="image/x-icon" />
    <asp:PlaceHolder runat="server">        
        <script src="<%: ResolveUrl("~/Scripts/_references.js") %>"></script>
        <script src="<%: ResolveUrl("~/Scripts/modernizr-2.5.3.js") %>"></script>
        <script src="<%: ResolveUrl("~/Scripts/jquery-1.7.1.js") %>"></script>
        <script src="<%: ResolveUrl("~/Scripts/jquery-1.7.1.min.js") %>"></script>
        <script src="<%: ResolveUrl("~/Scripts/jquery-ui-1.8.20.js") %>"></script>
        <script src="<%: ResolveUrl("~/Scripts/jquery-ui-1.8.20.min.js") %>"></script>
        <script src="<%: ResolveUrl("~/Scripts/ButtonManager.js") %>"></script>
        <script src="<%: ResolveUrl("~/Scripts/BarChart.js") %>"></script>
    </asp:PlaceHolder>
    <Meta name="viewport" content="width=device-width" />
    <asp:ContentPlaceHolder runat="server" ID="HeadContent" />
</head>
<body >
    <form runat="server">
    <asp:ScriptManager runat="server">
        <Scripts>
            <asp:ScriptReference Name="jquery" />
            <asp:ScriptReference Name="jquery.ui.combined" />
        </Scripts>
    </asp:ScriptManager>
    <header>
        <div class="content-wrapper">
            <div class="float-left">
                    <asp:ImageButton ID="logo" cssclass="site-title" runat="server" PostBackUrl="~/" ImageUrl="~/Images/logo.png" />
            </div>
            <div class="float-right">
                <section id="login">
                    <asp:LoginView runat="server" ViewStateMode="disabled">
                        <Anonymoustemplate>
                            <ul>
                                <li><a id="registerLink" runat="server" href="~/Account/Register.aspx">Register</a></li>
                                <li><a id="loginLink" runat="server" href="~/Account/Login.aspx">Log in</a></li>
                            </ul>
                        </Anonymoustemplate>
                        <LoggedInTemplate>
                            <p>
                                Hello, <a runat="server" class="username" href="~/Account/Manage.aspx" title="Manage your account">
                                    <asp:LoginName runat="server" CssClass="username" />
                                </a>!
                                <asp:LoginStatus runat="server" logoutAction="Redirect" logoutText="Log off" logoutPageUrl="~/" />
                            </p>
                        </LoggedInTemplate>
                    </asp:LoginView>
                </section>
                <nav>
                    <ul id="menu">
                        <li><a runat="server" href="~/">Home</a></li>
                        <li><a runat="server" href="~/Barchart.aspx">About</a></li>
                        <li><a runat="server" href="~/Contact.aspx">Contact</a></li>
                    </ul>
                </nav>
            </div>
        </div>
    </header>
    <div id="body">
        <asp:ContentPlaceHolder runat="server" ID="FeaturedContent" />
        <section class="content-wrapper main-content clear-fix">
            <asp:ContentPlaceHolder runat="server" ID="MainContent" />            
        </section>
    </div>
    <footer>
        <div class="content-wrapper">
            <div class="float-left">
                <p>&copy; <%: DateTime.Now.Year %> - My ASP.NET Application</p>
            </div>
        </div>
    </footer>  
    </form>
</body>
</html>

内容页：

<asp:Content runat="server" ID="FeaturedContent" ContentPlaceHolderID="FeaturedContent">
</asp:Content>
<asp:Content runat="server" ID="BodyContentHome" ContentPlaceHolderID="MainContent" >
    <asp:Panel ID="UpdatepanelWrapper" CssClass="Updatepanelwrapper" runat="server">
        <asp:UpdatePanel ID="UpdatePanel1" runat="server" >
            <ContentTemplate>
                <asp:PlaceHolder runat="server" ID="WholeWrapper">

                    <asp:PlaceHolder runat="server" ID="QuestionWrapper">
                        <asp:PlaceHolder runat="server" ID="LabelQuestion"></asp:PlaceHolder>
                        <asp:PlaceHolder runat="server" ID="Question"></asp:PlaceHolder>                        
                    </asp:PlaceHolder>
                </asp:PlaceHolder>
            </ContentTemplate>
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="btnAdd" EventName="Click" />
                <asp:AsyncPostBackTrigger ControlID="btnDelete" EventName="Click" />
            </Triggers>

        </asp:UpdatePanel>    
        <asp:Panel ID="ButtonPanel" CssClass="ButtonPanel" runat="server">
            <asp:ImageButton ID="btnDelete" runat="server" ImageUrl="~/Images/Deleteicon.png" CssClass="DeleteButtonHidden" OnClientClick="btnDelete_Click" />
            <asp:ImageButton ID="btnAdd" runat="server" ImageUrl="~/Images/Addicon.png" CssClass="AddButtonMoreMargin" OnClientClick="btnAddQuestion_Click" />
        </asp:Panel>
        </asp:Panel>  
    <asp:Button ID="btnSendQuestions" runat="server" Text="Skapa Föreläsning och frågor" OnClick="btnSendQuestions_Click" ValidationGroup="QuestionGroup" />

</asp:Content>

JAVASCRIPT代码：

if (window.addEventListener) window.addEventListener("load", load(), true);
else window.onload = load();

function load() {
    Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
}

function EndRequestHandler(sender, args) {
// NOT IMPORTANT
}

解决方法:

我刚刚解决了这个问题.我认为.
我知道该函数是在构建DOM之前运行的.

所以我就这样做了

$(document).ready(function () {
    Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
});

一个问题尚未成为主流.
当我点击Imagebutton btnAdd
控制台说：

Uncaught ReferenceError: btnAddQuestion_Click is not defined
onclick

这会将我引导到我写入此ImageButton的代码行.

Internet Explorer根本不喜欢这个.但是其他浏览器只是在没有任何东西的情况下继续进行,即使错误消息出现在Dev-Console中也是如此.

Button功能适用于.唯一的问题是错误.

编辑：现在解决了.我正在使用“OnClientClick”.在ImageButtons上.我将其更改为OnClick,这解决了这个问题.
我不知道两个人之间的区别,但只要它有效,我很高兴.

javascript – ‘Sys’未定义 – Ajax – master和contentpages ASP.NET 4.0

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