JSFiddle - React, Tailwind, and code Playground

HTML

<input id="txt" value="" />

<div class="link-item">jK</div>
<div class="link-item">JFOO</div>
<div class="link-item">Jdoodle</div>
<div class="link-item">jQuery is the shit!</div>

JavaScript

$('#txt').keyup(function() {
    var query = $(this).val();
    $("div.link-item")
        .hide()
        .filter(':contains("' + query + '")')
        .show();
});