JSFiddle - React, Tailwind, and code Playground

HTML

<div><input id="input1" /></div>

CSS

.ui-autocomplete { position: absolute; cursor: default; }    

.li-class{
 background-color:red;   
}

.a-class{
font-style: italic;

}

JavaScript

$("#input1").autocomplete({
    delay: 0,
    minLength: 0,
    source: ["One", "Two", "Three"]
}).data("autocomplete")._renderItem = function(ul, item) {
	if(item.label == "Two")
  {
    console.log("Splash");
    return $("<li class=\"li-class\"></li>").data("item.autocomplete", item).append("<a class=\"a-class\">" + item.label + "</a>").appendTo(ul);
    }
};