how to know which key is press using key event in js code example
Example: if keypress javascript
// Create your variable and asssign it to your ID or Class in the document using document.querySelector.
let name = document.querySelector('#exampleInputEmail1');
// Now use your variable and add an event listener to it plus your keypress, event and styling
name.addEventListener("keypress", (event) => {
name.style.border = "3px solid #28a745";
});