you mean you just want to use a webview in place of a browser (eg, chrome)?
webview is already "javascript enabled". if you have an html document with some
javascript, webview can run it. if you load a url from the internet, and the url contains
some javascript, webview can run it (almost all of it, anyway). webview can do a lot
of things that a browser can do.
what do you think webviewextras and ultimatewebview add?