Is there some relation between "XLLS" expression and AJAX / Javascript? What does the XLLS actually mean?
Thanks in advance
adding text from a comment below an answer
...the only result I got when I was looking for an answer on Google was the Excel XLLs but nothing related to JS. It's because I'm learning for an exam and there is a question to describe acronym "XLLS". Maybe typo?
Never heard of that in a Javascript context.
The only meaningful Google result I can see is Developing Excel 2010 XLLs