使用带有返回值的 C# CodeBehind 调用 jQuery 函数
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Calling jQuery function using C# CodeBehind with return value
提问by Phil
I have an ASP.NET application that will be used to display information from a server regarding various sites for a water company. I have a jQuery method that returns the text of the hyperlink which has been clicked within the div 'info':
我有一个 ASP.NET 应用程序，它将用于显示来自服务器的有关自来水公司各个站点的信息。我有一个 jQuery 方法，它返回已在 div 'info' 中单击的超链接的文本：
<script type="text/javascript">
$('#info a').click(function getName()
{
return ($(this).text());
});
</script>
I can call this method using C# codebehind using the code
我可以使用代码使用 C# 代码隐藏调用此方法
ScriptManager.RegisterStartupScript(this, this.GetType(), "script", "getName()", true);
However I cannot get its return value, which is what I need. Can anyone shed some light on this?
但是我无法获得它的返回值，这正是我所需要的。任何人都可以对此有所了解吗？
采纳答案by Zaki
Use hidden field :
使用隐藏字段：
<input type="hidden" id="myhiddenField" name="myhiddenField" runat="server" />
And JQuery (have not tested this) :
和 JQuery（尚未对此进行测试）：
<script type="text/javascript">
$('#info a').click(function getName()
{
$("#myhiddenField").val($(this).text());
});
</script>
And then you would be able to access hidden field in code behind myhiddenField.Value.
然后你就可以访问隐藏的代码后面的字段了myhiddenField.Value。
Or if you want to use Ajax Call see tutorial here
或者，如果您想使用 Ajax Call，请参阅此处的教程
EDIT :
编辑 ：
I created a little project and the below works fine for me (I get alert "testing"):
我创建了一个小项目，下面的项目对我来说很好（我收到“测试”警报）：
<script type="text/javascript">
$(document).ready(function () {
$('#info a').click(function getName() {
// As control having runat="server" their ids get changed
// selector would be like this
$("#<%= myhiddenField.ClientID %>").val($(this).text());
alert($("#<%= myhiddenField.ClientID %>").val());
});
});
</script>
<div id="info">
<a href="#">testing</a>
</div>
<input type="hidden" id="myhiddenField" name="myhiddenField" runat="server" />
回答by Satinder singh
Try this Calling Javascript function on code behind
在后面的代码上试试这个调用 Javascript 函数
ClientScript.RegisterStartupScript(GetType(), "Javascript", "javascript:FUNCTIONNAME(); ", true);
And If you have UpdatePanel there then try like this
如果你有 UpdatePanel 然后尝试这样
ScriptManager.RegisterStartupScript(GetType(), "Javascript", "javascript:FUNCTIONNAME(); ", true);
Updated Answer:
更新答案：
Client Side :Create a function and set value to hidden field as clientside , and on serverside call this function and get hiddenfield value
客户端：创建一个函数并将值设置为隐藏字段作为客户端，并在服务器端调用此函数并获取隐藏字段值
JS:
JS：
function myFunc(){
//set you value to hiddenfield
$(".hdfiled").val("Hello");
alert($(".hdfiled").val());
}
Code behind :Here am calling myFuncfrom serverside as your Title says call function from CODE BEHIND
后面的代码：这里是myFunc从服务器端调用，因为您的标题表示来自代码后面的调用函数
ClientScript.RegisterStartupScript(GetType(), "Javascript", "javascript:myFunc(); ", true);
string getHd_Value= myhiddenField.value;
回答by Sain Pradeep
You need to fire a button click event from JavaScript in ASP.NET after the document ready
文档准备好后，您需要在 ASP.NET 中从 JavaScript 触发按钮单击事件
like this
像这样
ScriptManager.RegisterStartupScript(this, this.GetType(), "script", "$(function() {
$( ‘#info a
‘ ).click(); });
", true);
for more details see Click()
有关更多详细信息，请参阅Click()
