angular call multiple functions each should wait for other to complete first

I have quiz site and I want to duplicate 1 quiz section to other. Each quiz section contains different variations and each variation have multiple questions. I have three functions first to duplicate quiz, second to duplicate variations and third to duplicate questions. But I want that each variation should wait to duplicate its questions then proceed to duplicate other variation. First function should wait for second and second should wait for third to finish first But I'm unable to code this. Any help would be appreciated. Thanks in advance.

https://stackoverflow.com/questions/66381927/angular-call-multiple-functions-each-should-wait-for-other-to-complete-first February 26, 2021 at 03:47PM