[英]Javascript code not being executed
我有一個嵌套的ListView(主/細節)問卷,在這篇文章中描述:內部列表項必須調用帶有三個參數的服務器方法。 多虧了你們中的幾個,我擁有可以正確生成JavaScript的代碼; 但是,該代碼實際上並未觸發。 這是內部列表視圖的聲明:
<asp:ListView ID="lstAnswers" runat="server" DataKeyNames="QuestionID" OnItemDataBound="lstAnswers_ItemDataBound">
<LayoutTemplate>
<tr id="ItemPlaceholder" runat="server" />
</LayoutTemplate>
<ItemTemplate>
<tr>
<td style="vertical-align: top; font-weight: bold;">
<asp:Label ID="lblPAQID" runat="server" Text='<%#Eval("ThisPAQID") %>' Visible="false" />
<asp:Label ID="lblPAQVersion" runat="server" Text='<%#Eval("PAQVersion") %>' Visible="false" />
<asp:Label ID="lblQuestionID" runat="server" Text='<%#Eval("QuestionID")%>' />
</td>
<td style="vertical-align: top;">
<asp:Label ID="lblQuestionText" runat="server" Text='<%#Eval("Question")%>' />
</td>
<td style="vertical-align: top;">
<asp:TextBox ID="txtAnswer" runat="server" Class="PAQAnswer" Text='<%#Eval("Answer")%>' />
<script type="text/javascript"> **THIS SCRIPT IS NOT FIRING**
var textBox = document.getElementById("txtAnswer");
if (document.attachEvent) {
document.attachEvent("onblur", textBox, function() {
SaveAnswer('<%#Eval("ThisPAQID")%>', '<%#Eval("QuestionID")%>', window.event.target.value);
});
} else {
document.addEventListener("blur", textBox, function() {
SaveAnswer('<%#Eval("ThisPAQID")%>', '<%#Eval("QuestionID")%>', this.value);
}, false);
}
</script>
</td>
</tr>
</ItemTemplate>
</asp:ListView>
生成的代碼如下所示:
<input name="lstQuestions$ctrl0$lstAnswers$ctrl0$txtAnswer" type="text" value="2.0" maxlength="3" id="lstQuestions_ctrl0_lstAnswers_ctrl0_txtAnswer" Class="PAQAnswer" style="width:30px;" />
<script type="text/javascript">
var textBox = document.getElementById("txtAnswer");
if (document.attachEvent) {
document.attachEvent("onblur", textBox, function() {
SaveAnswer('13242', '1', window.event.target.value);
});
} else {
document.addEventListener("blur", textBox, function() {
SaveAnswer('13242', '1', this.value);
}, false);
}
</script>
SaveAnswer調用中的嵌入值是正確的; 但是,我不知道如何將輸入語句綁定到JavaScript。 可能非常簡單,但我看不到...。
這行看起來像問題:
var textBox = document.getElementById("txtAnswer");
txtAnswer
不是控件的實際ID,因此您的腳本找不到它。 輸入的ID是lstQuestions_ctrl0_lstAnswers_ctrl0_txtAnswer
你應該嘗試類似的東西:
var textBox = document.getElementById("<%= txtAnswer.ClientID %>");
這將轉化為:
var textBox = document.getElementById("lstQuestions_ctrl0_lstAnswers_ctrl0_txtAnswer");
編輯:為什么不這樣做呢?
<asp:TextBox ID="txtAnswer" runat="server" Class="PAQAnswer" Text='<%#Eval("Answer")%>' onBlur="SaveAnswer('<%#Eval("ThisPAQID")%>', '<%#Eval("QuestionID")%>', this.value);" />
嘗試附加這樣的事件:
var textBox = document.getElementById("txtAnswer");
if (textBox.attachEvent) {
textBox.attachEvent("onblur", function() {
SaveAnswer('13242', '1', window.event.target.value);
});
} else {
textBox.addEventListener("blur", function() {
SaveAnswer('13242', '1', this.value);
}, false);
}
PS:我認為Victor也正確, txtAnswer
不是您節點的實際ID。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.