Consider this question:
How to check for an undefined or null variable in JavaScript?
The title seems pretty straightforward, but the body of the question asks for a less verbose form for the following check:
if (typeof(some_variable) != 'undefined'&& some_variable != null)this is a check for an undeclared or nullish variable.
The question has several answers, some/all of which discuss checking for undefined, rather than undeclared variables. These checks trigger an exception if used for declared variable.
Assuming I am not misreading/misunderstanding - what should be done in this situation? Should I re-title, or change the body, after so much activity on that question? And if you say "no" - we can't just leave it the way that it is, can way? It's confusing and misleading for people, especially JS novices.