Asp：按钮未禁用 [英] Asp:Button is not Disabled

问题描述

我在asp：更新面板中有Button。



< asp：Button ID =btnlaunchrunat =serverCssClass =btn_def marr_5 flt_left Visible =falseOnClick =btnlaunch_ClickOnClientClick =javascript：disableRequestbtn（）;/>



和我的JavaScript

 <   script    类型  =  text / javascript >  
 function disableRequestbtn（）{
 
 document.getElementById（'<％ = btnlaunch.ClientID ％> '）。disabled = true; 
 
 document.getElementById（'<％ = btnlaunch.ClientID ％> '）的removeAttribute（ 类）。 
 
 alert（gg）; 
} 
 <   / script  >  

但未禁用按钮&不要删除Class属性是什么问题。

解决方案

最初你已经使按钮可见= false然后我假设你已经使它可见=真。问题是虽然它现在通过更新面板更新但Javascript可能无法找到它。



尝试通过CSS设置可见性错误，例如

< pre lang =HTML> < asp：button id = btnlaunch runat = server cssclass = btn_def marr_5 flt_left style = display：none; onclick = btnlaunch_Click onclientclick = javascript：disableRequestbtn（）; xmlns：asp = < span class =code-keyword>＃unknown / >

希望，这有助于：）

I have Button in asp:update panel.

<asp:Button ID="btnlaunch" runat="server" CssClass="btn_def marr_5 flt_left" Visible="false" OnClick="btnlaunch_Click" OnClientClick="javascript:disableRequestbtn();"/>

and My JavaScript

<script type="text/javascript">
                                       function disableRequestbtn() {

                                           document.getElementById('<%= btnlaunch.ClientID %>').disabled = true;

                                           document.getElementById('<%= btnlaunch.ClientID %>').removeAttribute("class");

                                           alert("gg");
                                        }
                                    </script>

but its not disabled button & dont remove Class property whats the problem with it.

解决方案

Initially you have made the button visible=false and then later I assume, you have made it visible=true. Problem is although it is now updated through update panel but Javascript may fail to find it.

Try setting visibility false through CSS like

<asp:button id="btnlaunch" runat="server" cssclass="btn_def marr_5 flt_left" style="display:none;" onclick="btnlaunch_Click" onclientclick="javascript:disableRequestbtn();" xmlns:asp="#unknown" />

Hope, that helps :)

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