Find out all about the JavaScript charAt() method of a string
Return the character at the index i
Examples:
'Flavio'.charAt(0) //'F'
'Flavio'.charAt(1) //'l'
'Flavio'.charAt(2) //'a'
If you give an index that does not match the string, you get an empty string.
JavaScript does not have a “char” type, so a char is a string of length 1.