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20
ReferenceError: Can't find variable: hello2
SyntaxError: Unexpected escaped characters in keyword tocken: 'fals\u0065'
SyntaxError: Unexpected escaped characters in keyword tocken: 'fals\u0065'
SyntaxError: Unexpected escaped characters in keyword tocken: 'tru\u0065'
SyntaxError: Unexpected keyword 'var'
SyntaxError: Unexpected escaped characters in keyword tocken: 'v\u0061r'
SyntaxError: Unexpected keyword 'else'
SyntaxError: Unexpected escaped characters in keyword tocken: 'els\u0065'
SyntaxError: Cannot use the keyword 'false' as a variable name.
SyntaxError: Cannot use the keyword 'var' as a variable name.
SyntaxError: Unexpected escaped characters in keyword tocken: 'fals\u0065'
SyntaxError: Unexpected escaped characters in keyword tocken: 'v\u0061r'
10
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SyntaxError: Cannot use the keyword 'else' as a function name.
SyntaxError: Unexpected escaped characters in keyword tocken: 'els\u0065'