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Take advantage of user-defined variables in JavaScript | InfoWorld
As with all programming languages, JavaScript relies heavily on
user-defined variables. But unlike many languages -- including Java
-- JavaScript's system of variables is simplified, so that even
users with minimal programming experience can immediately use them.
JavaScript doesn't impose strict data formats or types for its
variables, which can greatly simplify programming. However, just
because JavaScript's variables are easy to use doesn't mean they
lack power. (3,100 words)
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