I know there is already questions about that, but I just can´t simply get this work, I have a JSP file with a java variable in it:
String test = "Hello";
And I need to read this value in the Javascript embedded in the same JSP file, I tried so many options, but it is not working, and for security I don't want pass the value using the URL or hidden values.
Any ideas of how get this working?
The best way to do it is to use something like following in your javascript code;
var myvar = '${jspvar}';
I know this one is old, but this worked for me:
var javaScriptVar="<%out.print(javaString);%>";
you need to make sure that if you are using an external js file (out of the jsp file), the above line has to be before the "include" script tag. for example this is the jsp file:
var javaScriptVar="<%out.print(javaString);%>";
<script src="some_location/test.js"></script>
You can pass the value by calling some methods in html part..
<input type="submit" value="view" onclick="callpro('<%= varname %>')" />
var jsvariable="<%=test%>";
One thing to note is that you could namespace those variables in this way:
var MYAPP.javaScriptVar="<%out.print(javaString);%>";
The technique is from "Javascript: The Good Parts" Book.
