Thank you, could solve the issue
On Wednesday, December 28, 2016 at 10:08:35 PM UTC+5:30, Massimo Di Pierro 
wrote:
>
> yes because you use val inside {{...}} and that is python code, not JS 
> code.
>
> Try replace
>
> ajax('{{=URL('default','other' vars = {'key':val})}}',[],'target')"/>;
>
>
> with
>
> ajax('{{=URL('default','other')}}?key='+val,[],'target')"/>;
>
>
> On Wednesday, 28 December 2016 10:20:26 UTC-6, nishanta sarma wrote:
>>
>> <script>
>> function my_function()
>> {
>>  var val = 'val';
>> ajax('{{=URL('default','other' vars = {'key':val})}}',[],'target')"/>;
>>
>> }
>> </script>
>>
>> <button onclick="my_function();/>
>>
>>
>> #in the controller:default.py
>> other:
>>   val = request.vars.key
>>   .......
>>  ......
>>   return val
>> this code is not working gives a name error val is not defined 
>>
>

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