Why debounce and not throttle for search?

For searching, debounce is used more often than throttle because:

• Debounce delays the execution of a function until the user stops typing for a specified amount of time. This means the server request will only be sent after a pause in typing, reducing the number of unnecessary requests.

• Throttle limits the frequency of function calls, allowing it to execute no more often than a specified interval, regardless of whether typing continues or not.

In the case of search, it's important not to send requests for every character, but to wait until the user finishes typing or pauses, to avoid overloading the server and receiving outdated results. Debounce is perfect for this.

Example of debounce in JavaScript:

function debounce(func, delay) {
  let timer;
  return function(...args) {
    clearTimeout(timer);
    timer = setTimeout(() => func.apply(this, args), delay);
  };
}

const search = debounce((query) => {
  console.log('Search:', query);
  // call search API
}, 300);

inputElement.addEventListener('input', (e) => {
  search(e.target.value);
});