Is There any Jquery Plugin for Autocad

The problem is that DWG is a proprietary format so software that can handle it is not free for most...(you can use Google to easily find them).
There are some plugins that can enable viewing DWG files (I know some for Chrome) but those force the client to install them...
If this site is just for fun, then try working with one of the free plugins. If this is a commercial site you better pay for the correct tool...