I'm looking for a programming environment similar to Scratch or AppInventor but generating code for JavaScript or HTML5. The basic idea is to build the program using "construction blocks". I need this for educational purposes.
I'm the developer of Waterbear, so I appreciate the plug, with the caveat that it is still very early and rough, so caveat acceptor. Another HTML block language, also based on Scratch is DesignBlocks, although I'm not sure what the development status is for that.