JAVASCRIPT

add keyup event javascript

// Assume the input element has an id of search
// <input type="text" id="search" />
const search = document.getElementById("search");

search.addEventListener("keyup", function (e) {
  const inputText = e.target.value; // Get the text typed by user
  console.log(inputText); // log the input text out
});

add javascript keyup on input

<input type="text" class="form-control" placeholder="Search" id="search_id"/>
<script type="text/javascript">
const log = document.getElementById('search_id');
document.addEventListener('keyup', logKey);
function logKey(e) {
	const value=log.value;
	if (e.key === 'Enter' || e.keyCode === 13) {
		transmit({search: value});
	}
};
</script>

keyup event

document.addEventListener("keyup", function(e) {
	e = e || window.event;
	// Add scripts here
	e.keyCode; // -> returns the keycode of the key that triggered the event
	e.key.toString(); // -> returns the ASCII character of the key that triggered the event
});