Extracting Characters from Strings

In Javascript, there are different ways of extracting a characters from a string.
Some of these are :

charAt(position)

The charAt(position) returns the character at a specific index. The first character starts at index 0.

Syntax : let character = original_string.charAt(position_number_zero_indexed);

					
            let str = "HELLO WORLD";
            let character = str.charAt(0);
			 	 
            character =  ??

				
            let str = "HELLO";
            let character = str.charAt(4);
				 
            character =  ??

The charCodeAt(position) method returns the unicode of the character present at index = position in the string

Syntax : let character = original_string.charCodeAt(position_number_zero_indexed);

					
            let str = "HELLO WORLD";
            let character = str.charCodeAt(0);
					
          character =  ??

You can also directly get the character by saying string_name[position]

Syntax : let character = original_string[position_number_zero_indexed];

					
            let str = "HELLO WORLD";
            let character = str[0];
					
          character  =  ??