How to pass a variable as a argument to javascript function

Question

I have a variable in my jsp page which i want to pass as an argument to a javascript function.How to do it?

code:-

 <%
       String ts=request.getParameter("testname");
       session.setAttribute("tname", ts);
  Connection con=null;
  Statement s=null;
  ResultSet r=null;
  int t=60000;
  try
        {
      Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
      con=DriverManager.getConnection("jdbc:odbc:online_testing");
      s=con.createStatement();  
      r=s.executeQuery("select * from "+ts+"");   
String time=r.getString("duration");
t=Integer.parseInt(time)*60000;     

  }
        catch(Exception e1)
        {
        response.setContentType("text/html");
        out.println(e1.toString());
        }
 %>
    <body onload="setTimeout('submitForm()',<%=t%>)">

It is taking only the initial value of t,not the updated one. How can I pass the value of variable "t" in function setTimeout() as an argument?

possible duplicate of [Javascript/JSP: How to pass JSP variables value on one page to javascript variables on next page?](http://stackoverflow.com/questions/3559058/javascript-jsp-how-to-pass-jsp-variables-value-on-one-page-to-javascript-variab) — Qantas 94 Heavy, Oct 23 '13 at 12:05

suresh manda · Answer 1 · 2013-10-23T12:17:35.710

0

try this.code in function

"javascript:validateform('<%=i%>')"


onclick="<%="javascript:validateform("+i+")"%>"

edited Oct 23 '13 at 12:17

answered Oct 23 '13 at 12:07

suresh manda

659
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score 0 · Answer 2 · answered Oct 23 '13 at 12:10

0

Change order of initialization of i, then you can use it

<%
                int i=1; //1 is just for e.g ,getting this value from database in project
%>
<form name="ifrm" onsubmit="return validateform(<%=i%>)" action="Givetest" method="post"> 
<input type="radio" name="r<%=i%>" value="<%=b%>"><label><%=b%></label><br>
</form>

answered Oct 23 '13 at 12:10

MC ND

69,615
8
84
126

Error:cannot find variable i – sam Oct 23 '13 at 14:14
Where ? JSP or Javascript ? – MC ND Oct 23 '13 at 15:23

Naveen Kumar Alone · Accepted Answer · 2013-10-23T14:10:30.400

0

Modify your code as below

<%
  int i=1; 
%>
<form name="ifrm" onsubmit="return validateform('<%=i%>')" action="Givetest" method="post"> 
  //code
</form>

edited Oct 23 '13 at 14:10

answered Oct 23 '13 at 12:19

Naveen Kumar Alone

7,536
5
36
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Error:cannot find variable i – sam Oct 23 '13 at 14:09
@saumyarajsinh try <% int i=1; %> before
tag
– Naveen Kumar Alone Oct 23 '13 at 14:10
@saumyarajsinh replace <%> with %> after intializing i variable and place it before form tag, i think it works perfect :) – Naveen Kumar Alone Oct 23 '13 at 14:14
yes,it worked but please have a look at my code.I edited the question.The variable "t" is not able to get a value inside the try block. Thank you – sam Oct 23 '13 at 14:40

How to pass a variable as a argument to javascript function

3 Answers3