Question

difference between CharAt and substring​

Answer 1

The substring() method extracts parts of a string and returns the extracted parts in a new string. so, you can say that there's a difference between slice() and substr() , while substring() is basically a copy of slice() . if you know the length of characters to be extracted use substr(

Answer 2

Char At is a character

Substring is related to string

Char At is related to different types of characters