c# - Why is javascript unable to get asp:Label innerText? - Stack Overflow

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I have two labels: username and email. I use them to retrieve their content and pass them as method parameters.

var lblEmail = $get('<%= lblEmail.ClientID %>');
var email = lblEmail.innerText;

var lblUsername = '<%= lblUsername.ClientID %>';
var username = lblUsername.innerText;

The email label is defined in the same way as username label does, but for this last I can't get the value, innertext returns undefined.

...

<td class="inputField">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<asp:Label ID="lblUsername" CssClass="font1" runat="server"/>
</tr>
</table>
</td>

...

...
<td class="inputField">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td>
<asp:Label runat="server" ID="lblEmail" CssClass="font1" />
</td>
...

What could be a possible reason to justify what is happening? How can I solve this problem? I'm seeing on the page both label values, I set them on the same place (when page loads).

I have two labels: username and email. I use them to retrieve their content and pass them as method parameters.

var lblEmail = $get('<%= lblEmail.ClientID %>');
var email = lblEmail.innerText;

var lblUsername = '<%= lblUsername.ClientID %>';
var username = lblUsername.innerText;

The email label is defined in the same way as username label does, but for this last I can't get the value, innertext returns undefined.

...

<td class="inputField">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<asp:Label ID="lblUsername" CssClass="font1" runat="server"/>
</tr>
</table>
</td>

...

...
<td class="inputField">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td>
<asp:Label runat="server" ID="lblEmail" CssClass="font1" />
</td>
...

What could be a possible reason to justify what is happening? How can I solve this problem? I'm seeing on the page both label values, I set them on the same place (when page loads).

• c#
• javascript
• asp-ajax

Share Improve this question Follow edited Mar 16, 2009 at 14:29 Erik Funkenbusch 93.5k2929 gold badges201201 silver badges292292 bronze badges asked Mar 16, 2009 at 14:21 Victor RodriguesVictor Rodrigues 11.7k2525 gold badges7878 silver badges108108 bronze badges

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2 Answers 2

Sorted by: Reset to default 5

In the second part of your code

var lblEmail = $get('<%= lblEmail.ClientID %>');
var email = lblEmail.innerText;

var lblUsername = '<%= lblUsername.ClientID %>';
var username = lblUsername.innerText;

$get call is absent. Should be

var lblEmail = $get('<%= lblEmail.ClientID %>');
var email = lblEmail.innerText;

var lblUsername = $get('<%= lblUsername.ClientID %>');
var username = lblUsername.innerText;

Because you defined only the client ID for the userName label :

var lblEmail = $get('<%= lblEmail.ClientID %>');
var email = lblEmail.innerText;

var lblUsername = '<%= lblUsername.ClientID %>';
var username = lblUsername.innerText;

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