syntax error in javascript inside asp page

Question

    <script type="text/javascript">
            /* <![CDATA[ */
            var on_id = 1;

     if (<%=GetValue() %>) {
                on_id  = <%=GetValue() %>; 
            }
   </script>

I do get 2 syntax errors: at the 2nd closed brachet: after %> and at ; after again %>. GetValue() is a public decimal method defined in code behind.

How can I achieve this?

Answer 1

Try this

   <script type="text/javascript">
        var on_id = 1;
        <%if (GetValue()) {%>
            on_id  = '<%=GetValue() %>'; 
        <%}%>
   </script>

Answer 2

im not an expert but i had faced a similar problem.it got solved by putting <%=GetValue() %> in ''(single quotes) i.e '<%=GetValue() %>' so i stopped getting syntax errors

use parseFloat() function to get the float value from the string

Answer 3

 $.ajax({
      type: "POST",
      url: 'yoururl/GetValue',
      data: "{}",
      contentType: "application/json; charset=utf-8",
      dataType: "json",
     success: successFunction,
    error: errorFunction
    });

Do it using an AJAX call :)Check the condition in successhandler