<div>
  <h1>With debouncing</h1>
  <input type='text' name='search keywords' placeholder='Start typing to search' />
  <h1>No of keystrokes: <span class='keystrokes_count'>0</span></h1>
  <h1>No of requests made: <span class='requests_made'>0 </span>
</div>

*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

div{
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  height: 100vh;
}
h1{
  font-size: 20px;
  line-height: 32px;
  margin-top: 20px;
  margin-bottom: 20px;
}
input{
  width: 70%;
  height: 100px;
  appearance: none;
  border: 5px solid pink;
  border-radius: 10px;
  padding: 10px;
  font-size: 24px;
  text-transform: uppercase;
  outline: none;
}

let keyStrokesCount = 0;
let requestsCount = 0;
let timeout;

const inputField = document.querySelector('input')
const keyStrokesSpan = document.querySelector('.keystrokes_count')
const requestsSpan = document.querySelector('.requests_made')

inputField.addEventListener('input', e => {
  keyStrokesSpan.innerHTML = ++keyStrokesCount;
  
  clearTimeout(timeout)
  timeout = setTimeout(makerequest, 500)
})

function makerequest() {
  requestsSpan.innerHTML = ++requestsCount;
}