Anticipating User Error Users have a great deal of power overtheir browsers, and an increasing number of users choose to disableJavaScript due to concerns about security. Plug-ins and add-ons areavailable for every major browser that makes this very easy to do,so a programmer cannot automatically expect that JavaScript isavailable on every computer that visits his or her website. Ofcourse, you can perform a check to determine whether JavaScript isactive and prompt the user to re-enable JavaScript when it isabsolutely necessary (or redirect browsers without JavaScript to adifferently-designed page), but that only solves part of theproblem. Because JavaScript resides within the
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