10
10
20
20
ReferenceError: 'hello2' is undefined
SyntaxError: Syntax error
SyntaxError: Syntax error
SyntaxError: Syntax error
SyntaxError: Syntax error
SyntaxError: Syntax error
SyntaxError: Syntax error
SyntaxError: Syntax error
SyntaxError: The use of a keyword for an identifier is invalid
SyntaxError: The use of a keyword for an identifier is invalid
SyntaxError: The use of a keyword for an identifier is invalid
SyntaxError: The use of a keyword for an identifier is invalid
10
10
10
10
SyntaxError: The use of a keyword for an identifier is invalid
SyntaxError: The use of a keyword for an identifier is invalid