Error in javascript, how to solve?

Question

JavaScript

Already solved the issue, the problem was the wrong ID that the javascript was sending to the page. Fixed it and everything works fine. Thanks for the help!

Answer 1

try {
c = $.parseJSON(c)
} catch (err) {
}

Answer 2

If I read it right, the error is
there the text goes immediately with the variable... it shouldn't be like that, it should be even like
'text' + variable + 'text' or in another sequence, perhaps the following option was meant

else changeLoaderToModal('Ошибка проверки, window[test__error__' + c.code + ']')
//or
else changeLoaderToModal('Ошибка проверки, window[' + test__error__ + c.code ']')

or something like that, I don't understand test__error__ -- text or variable