Blank char and semicolon
Some characters in javascript are treated as blank char, including space(0x20), table(0x09), enter(0x0D,0x0A). Blank char is used to make the code for reading and understanding. If insert a blank char into a token(keyword, variable, number), then the token is seperated to 2 parts, not one token, sometimes it causes an error. Semicolon is used to end one sentence, like: a = 1; b = 2;
Javascript's Case Sensitivity
Javascript is a case-sensitive language. The keyword in javascript must be small letters, "if","switch","case","catch", cannot be written as "If","Switch","Case","Catch". And when you define and use variable name, function name in javascript, their case must be consistent. |
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