JavaScript for Ajax in an Admin View

[linpi1]

in an admin view for customers, I would like to get the coupon value after I entering the coupon (+ return) with ajax.
both php files ajax.php and ajax.json.php seams fine to me, just the javascript is not easy for me...

I entered in the coupon field to get the value of the coupon after a return, an firing the controller...
jQuery('#jform_author_coupon').change(function(){ getCoupon(jQuery('#jform_author_coupon').val()); });

and in view footer
function getCoupon(coupon){ var getUrl = JRouter("index.php?option=com_bookshop&task=ajax.getCoupon&format=json&raw=true"); if(token.length > 0 && user > 0){ var request = 'token='+token+'&coupon='+coupon; } return jQuery.ajax({ type: 'GET', url: getUrl, dataType: 'json', data: request, jsonp: false }); }
the function getCoupon is called, but I get in the console, this error: "JRouter is not defined"

I know, the ajax code is not even finished, since the result is not echoing in the coupon value field.
It is a little embarrassing to ask the kind of questions, I'm just blocked... and obviously I'm not a JavaScript master... ;-)
thank you for a little hint.

[linpi1]

just to close to this post:
finally and temporarily it works, but I didn't found why JRouter is not defined.
I hade to modify the ajax javascript:
function getCoupon(coupon){ var getUrl = 'index.php?option=com_bookshop&task=ajax.getCoupon&format=json&raw=true'; if(token.length > 0){ var request = 'token='+token+'&coupon='+coupon; jQuery.ajax({ type: 'GET', url: getUrl, dataType: 'json', data: request, jsonp: false, success: function(data) { jQuery('#jform_coupon_value_author_str').val(data); } }); } }
probably not elegant but it works...

[TLWebdesign]

JRouter refers to a Javascript function that needs to be included in your view's footer (JS). It's a custom code llewellyn uses in his extensions (and i think most of us too) it should be there in "custom codes". If not try installing the demo package in JCB and it should appear in custom codes view.

Add the "[CUSTOMCODE=jsRouter]" tag to the Add JavaScript (view-footer) * field in your admin view under the "javascript" tab.

Then the code should work.

[linpi1]

Cool thank's a lot, just fantastic !