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Konami code

The Konami Code (Japanese: コナミコマンド, Konami komando, "Konami command") is a cheat code that appears in many Konami video games, although the code also appears in some non-Konami games.

During the title screen before the game demo begins, the player could press the following sequence of buttons on the game controller to enable the cheat: ⬆ ⬆ ⬇ ⬇ ⬅ ➡ ⬅ ➡ B A

You can see a demo here

How to install

You can install through Bower

bower install konami-code-event

Or just download the minified JS file through this link

How to use

Load the script in your web app/site and listen for the event konamiCode in your document:

document.addEventListener('konamiCode', function(event) {
  // code executed whenever the user types a konami code
})

It can also be used along with jQuery:

$(document).on('konamiCode', function(event) {
  // code executed whenever the user types a konami code
})

Type this sequence ⬆ ⬆ ⬇ ⬇ ⬅ ➡ ⬅ ➡ B A to trigger the event.

How to contribute

Fork this repository
Run npm install
Create a new branch for each feature or improvement
Ensure that your code is accompanied with tests
Run grunt test to ensure that your new tests and the old ones are all passing
Send a pull request from each feature branch

License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.