JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="searchFAQ">

JavaScript

$(document).ready(function() {
    var timer, searchInput;
	$('#searchFAQ').keyup(function() {
		clearTimeout(timer);
		timer = setTimeout(function() {
			searchInput = $('#searchFAQ').val().match(/\w+/g);
			if(searchInput) {
				for (var elem in searchInput) {
					if (searchInput[elem].length < 4) {
						//remove those entries
						searchInput.splice(elem, 1);
					}
				}
				console.log(searchInput);
			}
		}, 500);
});