JSPspEmu Git (2014/04/29) is released. JSPspEmu is a PSP emulator made using javascript (actually typescript). It will work with any modern browser. Though the first version work only works with Chrome (desktop and android). At this point it can run some demos.

JSPspEmu Git Changelog:
- WIP faster function calls (reverted partially temporarily)
- WIP faster function calls
- WIP fixed texture cache
Due to limitations on html5/js setTimeout resolution time (you can't delay less than 4ms usually), I have created an accummulated time.
waitVblankAsync will use this mechanism and also it will avoid waiting more in the cases the delay was greater than the next vblank, so games should run smoother now (not too much fast, not too much slow).
- Missing csproj update
- Added flash0 and fonts
- Added some more demos
- Small changes
- Some cleanups

Try online: JSPspEmu Git (2014/04/29)
Source: Here