Forces IE9 to trigger the INPUT event when the user deletes/cuts text from the input - making the event works as it should (and as it does in all the modern browsers)
Insert the script anywhere in your webpage, and the input event will start working properly on IE9.
<script src="ie9-oninput-polyfill.js"></script>
You can even use the conditional tags:
<!--[if IE 9]><script src="ie9-oninput-polyfill.js"></script><![endif]-->
You can install it from NPM also:
npm install --save ie9-oninput-polyfill
Then, if using some bundler like webpack/browserify, you only need to import it:
require('ie9-oninput-polyfill');