IE11 doesn't send a form if cookie is undefined

Question

I have a webform which has asking for some cookie settings:

par=Cookies.get('demo'); // => 'value'

Cokies are set after part1 of current Form filled out.

If to fill Form1 and than to fill current Form everything works well however if I open a page directly by weblink with no Form1 was fillled out (cookie 'demo' is undefined) than Form is not submitting.

No errors, no message. Button is processing but data is not sending out. How to fix it?

THE ISSUE HAPPENS ON IE11 Only.

Answer 1

par=Cookies.get('demo') || ''; The || '' at the end defaults the value to an empty string if undefined. – JM-AGMS 12 hours ago