问题
Why is it that when i type {} === null into the console it throws
SyntaxError: Unexpected token ===
null === {} gives me false as expected.
回答1:
Because {} is treated as an empty block. You can wrap it in parentheses to force an expression:
({} === null)
来源：https://stackoverflow.com/questions/20753091/null-throws-syntax-error-in-developer-console