Before the script is run, the scripting engine parsers all of the code,converting it into tokens.When an unrecognizable structure or an expression is encountered, a syntax error is generated.
Syntax errors tend to popup in several circumstances:
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1) When something is missing from the code-parentheses, keywords (especially in blocks), statement elements, or when the keyword are simply out of place.
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2)When a keyword is misspelled or used incorrectly
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3)When you try to use a Visual Basic or VBA keyword or function that is not implemented by VBScript
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4)When you use keywords that are not supported by a particular version of the scripting engine (certain keywords may be phased out, and others added)
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