- Click on the search button
- Open browser console
- Find string (console.log) in the browser console with ( one of the test functions ) text line
- Сonsole.log string suggests that there is still some js function in js code
- Find js code in custom.js
- Find //secretfunction
- There is no point in parsing the function code, you just need to find the name of the function in the code and execute it. 'secretfunction()'