I don't really understand what the $ and $$ commands are for. I thought they are just a replacement for 'by.css' but why the $$?
<element id = "eId"></element>
I thought, that given the above, these would be equivalent:
However, the first one works and the second doesn't. Why, what's the difference between the three?
The docs are of little help. They seem to imply that "$" is for chaining only, e.g. element(by.css('#eId')).element($('#childId')); or "Select the first element, and then select the second element within the first element.' However, I have seen examples with $ being used to select the first element.
Anyway, that's a lot of text for "What are the differences between the three (by.css, $, and $$)?"