Add inline script for a dynamic created input button to download html table as excel format

Question

https://jsfiddle.net/insin/cmewv/

This is the original JSfiddle

The original JSfiddle allows me to dynamically create a download button for the HTML table as excel format; however it calls from a function.

I'd like to change this in an inline method so it doesn't need to call the function like so

https://jsfiddle.net/ekj40bLu/

Thank you for all the help in advance.

Somehow I can't get the idea how to change URI as inline way, any help would be much appreciated

 <input type="button" onclick="(function(){

    content of javascript from the function
            
            return false;
        })();return false;
        " value="Export to Excel">