How to reference a variable of jsp in the script function?

[qingwu wang]

Hello everybody!

<scripte language="javascript">
var text=document.form1.text1.value
document.form1.action="<%=encodeURL("/pdajsp/sub.jsp?text1="+text, request, response)%>";

text1 is a text component in the jsp page,I want to get text value and put it into request string.the *encodeURL*is a function in the jsp page,but I cann't get text1 value in the script.what should I do?

[Chris Baron]

You've got to keep in mind what happens where with serverside JSP and clientside Javascript.
"<%=encodeURL("/pdajsp/sub.jsp", request, response)%>" is JSP and handled on the server.
The result of the method encodeURL and all other executed JSP is written as HTML to the page and send send to the client then.
If you look at the html source in the browser you can see that the form's action-attribute contains a URL.
"document.form1.text1.value" is the value of a textfield, wich assumably is changed by the user... on the client side (where else?).
If you want to concatinate the textfield's value to this URL before submitting the form, you can use something like this:

<script>
<!--
function add2URL()
{
var text1 = document.form1.text1.value;
if( text1 != "" )
{
document.form1.action += "?text1=" + text1; //Add texfield value to action
alert( document.form1.action ); //to be deleted
return true;
}
else
{
alert( "Please fill out Textfield 1" );
return false;
}

}
//-->
</script>
<form action="<%=encodeURL("/pdajsp/sub.jsp", request, response)%>" onsubmit="return add2URL()" name="form1">
Textfield 1<input type="text" name="text1"><br>
<input type="submit">
</form>
</body>
</html>

hth cb

[qingwu wang]

Thanx a lot