Javascript function fails to return element

by

You are using .each() with a function

.each(function(){
    ...
    return this;
});
return false;

This will return from the callback (and maybe stop the each-loop if this was false), but never break out and return from the outer getCurrentCell function! So, that one will always return false.

Quick fix:

var result = false;
<...>.each(function(){
    if (<condition>) {
        result = <found element>;
        return false; // break each-loop
    }
});
return result; // still false if nothing found

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