在Javascript中查找asp：button和asp：textbox [英] Finding an asp:button and asp:textbox in Javascript

问题描述

我试图做的是得到一个asp：按钮来点击。

 < loginview> 
< asp：login1> 
< logintemplate> 
 // asp：textbox和asp：button位于这里。 
< / loginview> 
< / asp：login> 
< / logintemplate> 
  

那么如何让javascript指向那个位置，以便我可以操作它。例如，点击按钮。

解决方案

首先，您需要弄清楚正在使用哪个模板，因为您可以只有访问活动的一个。 （匿名或登录）。一旦你这样做，在LoginView上使用FindControl方法找到你需要引用的元素的ClientID。

例如：

 < form runat =server> 
< asp：LoginView runat =serverID =LoginView> 
< AnonymousTemplate> 
< asp：Button ID =ASPButtonText =Buttonrunat =server/> 
< / AnonymousTemplate> 
< / asp：LoginView> 
< / form> 
 
< script type =text / javascript> 
 var el = document.getElementById（'<％= LoginView.FindControl（ASPButton）。ClientID％>'）; 
< / script> 
  

What I'm trying to do is get an asp:button to click. The only problem is that it is within a few tags.

Example:

<loginview>
     <asp:login1>
          <logintemplate>
              //asp:textbox and asp:button are located here.
          </loginview>
     </asp:login>
</logintemplate>

So how would I get javascript to point to that location so that I can manipulate it. For example, get the button to click.

解决方案

First, you need to figure out which template is being used, since you can only access the active one. (Anonymous or LoggedIn). Once you do that, use the FindControl method on the LoginView to find the ClientID of the element you need to reference.

For example:

<form runat="server">
  <asp:LoginView runat="server" ID="LoginView">
    <AnonymousTemplate>
      <asp:Button ID="ASPButton" Text="Button" runat="server" />
    </AnonymousTemplate>
  </asp:LoginView>
</form>

<script type="text/javascript">
 var el = document.getElementById('<%= LoginView.FindControl("ASPButton").ClientID %>');
</script>

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