There's a bit of confusion here, and I'm running it backwards, and I get an error, TypeError: Cannot read property
It was later discovered that because the data records obtained by GetRecords, records.length was only 1 in length.
So how do we get the previous k-string?
Open: the opening price High: the highest price Low: lowest price Close: closing price Volume: the amount of trade
My program, the real disk, has no problem, but it can't retest, but it needs to retest to find the optimal parameter.
Solution: After several cycles, the number of retrievals will gradually increase, I was worried.