If you want to change selection, open document below and click on "Move attachment"
Strings are useful for holding data that can be represented in text form. Some of the most-used operations on strings are to check their length , to build and concatenate them <span>using the + and += string operators, checking for the existence or location of substrings with the indexOf() method, or extracting substrings with the substring() method.
There are two ways to ac
last interval [days]
repetition number in this series
scheduled repetition interval
last repetition or drill
Do you want to join discussion? Click here to log in or create user.