This is a web-based NES emulator created by a British netizen using JavaScript. Through this emulator, players can play classic NES games directly on the web, which is very convenient.
However, Ben Firshman, the author of the JSNES emulator, stated that due to the high performance requirements of this emulator for browser's JavaScript, he strongly recommends netizens to use Google Chrome browser. If you don't want to use Chrome, at least use Firefox. As for IE, it's not recommended at all.
After being tested by the webmaster, the JS web version of the NES emulator runs very smoothly under Google Chrome. Currently, dozens of classic games can be played, such as Super Mario and Contra.
The operation of the JS web version of the NES emulator is also very simple. The arrow keys control "up/down/left/right", Z/X keys control "attack/jump", the Enter key is for "start", and the Ctrl key is for "select" game mode. Fans of NES games can have a try. Remember to use Chrome browser.