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See more: ASP.NET Javascript
I tried below code in master page but it shows me error.Like
The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>

My code is here:
<script type="text/javascript" language="javascript">
        var sessionTimeout = "<%= Session.Timeout %>";
        function DisplaySessionTimeout() {
            alert(sessionTimeout);
            //if session is not less than 0
            if (sessionTimeout >
Posted 31-Jan-13 23:32pm
Comments
Irbaz Haider Hashmi 1-Feb-13 5:19am
   
You can set the variable value from your page code
ScripManager.RegisterClientScriptBlock
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Solution 2

if your javascript is in the head section of the page, try placing it at the end after body tag...
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v2

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