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setUserData(key, data, handler)
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Parameters
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Stringkey
The key to associate the object to.
DOMUserDatadata
The object to associate to the given key, or null to remove any existing association to that key.
UserDataHandlerhandler
The handler to associate to that key, or null.
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Returns
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DOMUserData. Returns the DOMUserData previously associated to the given key on this node, or null if there was none.
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