An integer between 0 and 1-less-than the length of the string. [MDN link](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String ...

The index is required field. If no character is found or index is less then 0 then it will return NaN or empty string. Example of charAt() method : App.html <!DOCTYPE ...

The charAt() method returns the specified character from a string. Characters in a string are indexed from left to right. The index of the first character is 0, and the index of the last character in ...