Passing javascript parameter to bean

Question

Here's a real short example of what I'm trying to do.
function getReport(index) {
document.write("Name = " + <%= bean.getReport(index).getName() %> );
Now of course this will not work, because my bean does not know of "index" that was passed via the javascript function. But how can I get this parameter passed? My bean holds onto a Vector of reports. My bean's method getReport(int index) will return one report. Then I can print out it's name. But I can't figure out how to pass the javascript function variable over to the java world. I want to pass the the index as a paramater when a user clicks on an option in an HTML select form.

Answer 1

Here's a real short example of what I'm trying to do.
function getReport(index) {
document.write("Name = " + <%=
= bean.getReport(index).getName() %> );
Two options.
1) On the click, reload the page with a URL parameter &index=#
2) Copy your Report names into a javascript array for use "live" on the page.
...In JSP...
<SCRIPT LANGUAGE="JavaScript1.2">
var reportNames = new Array();
<%
    int index = 0;
    for(Iterator i = bean.getReports().iterator(); i.hasNext(); )
        Report report = (Report)i.next();
        out.print( "reportNames[" );
        out.print( index++ );
        out.print( "] = '");
        out.print( report.getName() );
        out.println("' ;" );
%>
function getReport(index) {
    document.write("Name = " + reportNames[index] );
</SCRIPT>
NOTE: I use the index counter to place the objects into the array because I cannot remember the name of a javascript function that is cross-browser compatible to add to the end( might just be add ).
If you want more than one property per array location, build temporary objects with the following syntax
reportNames[0] = {name:'Here is the name', value:'avalkjd', etc:'etc'};
reportNames[0].name OR reportNames[0].etc
Hope this helps.