javascript - Null Page_Validators 在触发 asp 按钮 onclick 时导致错误

Question

我有一个 asp 按钮，用于提交带有一些后端验证的表单

<asp:button id="btnAdd" visible="true" runat="server" ValidationGroup="ETAFAdd"  text="Add &#187;" CssClass="formBut addEmailButton" causesvalidation="true" />
                    &nbsp; <a id="hoverover" style="cursor:default;" onmouseover="ShowPopup(this);" onmouseout="HidePopup();">

及其提交的字段:

<td valign="top">
    <asp:textbox id="txtToName" CssClass="iField txtToName" runat="server" ValidationGroup="ETAFAdd" />
    <asp:RequiredFieldValidator runat="server" ID="rfvToName"
        ControlToValidate="txtToName"
        ValidationGroup="ETAFAdd"   
        Display="Dynamic"
        ErrorMessage="<b>Required Field Missing</b><br />A name is required." />  
    <ajaxToolkit:ValidatorCalloutExtender runat="Server" ID="vceToName"
        TargetControlID="rfvToName"
        HighlightCssClass="validatorCalloutHighlight" /> 
</td>
<td valign="top">
    <asp:textbox id="txtToEmail" CssClass="iField txtToEmail" runat="server" ValidationGroup="ETAFAdd"/>
    <asp:RequiredFieldValidator runat="server" ID="rfvToEmail"
        ControlToValidate="txtToEmail"
        ValidationGroup="ETAFAdd"
        Display="Dynamic"
        ErrorMessage="<b>The email address you entered is invalid.</b><br />Example: name@wimco.com" />  
    <ajaxToolkit:ValidatorCalloutExtender runat="Server" ID="vceToEmail"
        TargetControlID="rfvToEmail"
        HighlightCssClass="validatorCalloutHighlight" /> 
</td>

当我点击asp按钮时，它就起作用了。我尝试在页面上添加另一个按钮，通过 onclick 触发 asp 按钮

$(".formBut.addEmailButton").click();

但是在 ScriptResource 验证中发生了 javascript 错误；前两个 Page_Validators 为 null，我不知道为什么，这些 null 对象会引发错误。这是尝试运行的函数:

function Page_ClientValidate(validationGroup) {
Page_InvalidControlToBeFocused = null;
if (typeof(Page_Validators) == "undefined") {
    return true;
}
var i;
for (i = 0; i < Page_Validators.length; i++) {
    ValidatorValidate(Page_Validators[i], validationGroup, null);
}
ValidatorUpdateIsValid();
ValidationSummaryOnSubmit(validationGroup);
Page_BlockSubmit = !Page_IsValid;
return Page_IsValid;
}

空 Page_Validators 来自哪里？

Answer 1

检查验证器是否为空。

if (validators != null) {
    var i;
    for (i = 0; i < Page_Validators.length; i++) {
        ValidatorValidate(Page_Validators[i], validationGroup, null);
    }
}