Passing javascript variable to JSP via AJAX

Question

I need to pass javascript variable "textVal" to a jsp.I just can't figure correct syntax. My code is like this

 function show(textVal){
   AJAX.onreadystatechange = handler;
   AJAX.open("POST","service.jsp",true);
   AJAX.setRequestHeader("Content-type","application/x-www-form-urlencoded");
   AJAX.send("fname='+textVal+'");
};

How do i pass this textVal to service.jsp

If you are able to use jQuery, I would strongly recommend it, as ajax functionality is one of the areas where jQuery shines. — Derek Henderson
– Derek Henderson, Commented May 21, 2013 at 15:18
That's not how AJAX works. developer.mozilla.org/en-US/docs/AJAX/Getting_Started — SLaks
– SLaks, Commented May 21, 2013 at 15:18
@SLaks What's wrong with the code? Looks fine to me except for the param passed to .send() — Ian
– Ian, Commented May 21, 2013 at 15:20
@SLaks Exactly, what is AJAX? It's probably not safe for me to assume it's an XMLHttpRequest instance, but it's also not safe to assume it's not. They seem to have the basics down - using onreadystatechange, open, setRequestHeader, and send properly. It might've been easier to ask and figure out what AJAX was instead of thinking they know nothing — Ian
– Ian, Commented May 21, 2013 at 15:38

techfoobar · Accepted Answer · 2013-05-21 15:18:36Z

3

You do not need the extra quotes. You can use:

AJAX.send("fname="+encodeURIComponent(textVal));

answered May 21, 2013 at 15:18

techfoobar

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