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And leave the Web as a set of static pages like in the nineties? Web applications are desirable, if only because they're multi-platform. Javascript is what saved us from those slow and not so safe Java applets (and Flash, Silverlight, which would be everywhere without Ajax).

Anyway, malwares would have spread through downloaded executables (e-mail attachments, etc). Is Javascript even helpful to most malwares?

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Is Javascript even helpful to most malwares?

Yes, very much so. Adobe PDF reader's JavaScript ability is the reason it's dangerous to open PDF files anymore. They issue a new patch once a month it seems and are working on a sandbox as the problem cannot be contained. Without JavaScript embedded in the PDF files, this would be a much more manageable issue.

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