No IE has ActiveX that lets me know if a record exists.
Is there a way for Firefox and Google Chrome to let me know if a particular record also exists (using javascript) either through a plugin or another method?
According to this answer in SO , Chrome is not possible.
In Firefox, the documentation says that it is possible through XPCOM using the API nsIWindowsRegKey that was introduced in Firefox since version 1.5.
Another alternative is to use a Java applet to gain full access to the PC, as in some banking sites that install "security" software.
With JavaScript, in Google Chrome you will not be able to access the Windows registry for security reasons. Maybe with Microsoft ActiveX you might get a little more permission, but JavaScript was not meant to interfere with the core of the system.
