I'd like to make a simple text-based game using either JavaScript or PHP. Ideally I'd like to be able to render ASCII text in a kind of blackscreen "console" style (think console roguelikes such as Crawl or Nethack, or old Infocom text adventure games). The game would be simple, mostly text entry and menu choices.
Is this easily done using JS or PHP; if so, could you give me some pointers, and if not, what could I use to have this kind of game running from a browser rather than an executeable?