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Javascript var inside a EL List's index

Chetan Pandey
Ranch Hand

Joined: Aug 01, 2005
Posts: 31
I have the folowing requirement:

func(index){

${requestScope.list[XX].title}

}

Instead of the XX above I want to use the javascript 'index' variable.

I have tried <c:set var="ind1">index</c:set>

${requestScope.list[ind1].title}
${requestScope.list['${ind1}'].title}


and several other ways. to no avail including scriptlets

any ideas.

Thanks

CP
D. Ogranos
Ranch Hand

Joined: Feb 02, 2009
Posts: 214
That is not going to work. Your function func() is javascript, which is executed in the client (the browser). The EL expression ${requestScope...} is executed on the server, before the page even arrives at the client.

If you want to choose something from that list (which is on the server) based on a user action in the client, you will have to make another request to the server (either a form submit, or an AJAX request).

OR, you could write all the values in the list on the page, as javascript instructions, and then have your function select from that.
Bear Bibeault
Author and ninkuma
Marshal

Joined: Jan 10, 2002
Posts: 60050
    
  65

Please read this article to understand JSP and why you cannot do it that way.


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