There are two challenges that always come about and no matter what I seem to answer, SoloLearn always marks me as wrong.
Both are multiple choices.
One asks to select all the invalid function names and the options are something like:
0function0 - invalid, begins with numeral;
hello_world - valid;
function123 - valid;
123_function - invalid, begins with numeral.
The other one asks to check all the object property accesses:
I have commented next to each option the ones I believe are correct. I have tried different combinations, but the system always gives me "incorrect".
Is it only me? Is it a problem with my phone? Am I seeing all the options available?