Isotope Search Jquery

<style>
    * {
        box-sizing: border-box;
    }

    body {
        font-family: sans-serif;
    }

    /* ---- input ---- */
    input[type="text"] {
        font-size: 20px;
    }

    /* ---- isotope ---- */
    .grid {
        border: 1px solid #333;
    }

    /* clear fix */
    .grid:after {
        content: '';
        display: block;
        clear: both;
    }

    /* ---- .element-item ---- */
    .element-item {
        position: relative;
        float: left;
        width: 100px;
        height: 100px;
        margin: 5px;
        padding: 10px;
        background: #888;
        color: #262524;
    }

    .element-item>* {
        margin: 0;
        padding: 0;
    }

    .element-item .name {
        position: absolute;
        left: 10px;
        top: 60px;
        text-transform: none;
        letter-spacing: 0;
        font-size: 12px;
        font-weight: normal;
    }

    .element-item .symbol {
        position: absolute;
        left: 10px;
        top: 0px;
        font-size: 42px;
        font-weight: bold;
        color: white;
    }

    .element-item .number {
        position: absolute;
        right: 8px;
        top: 5px;
    }

    .element-item .weight {
        position: absolute;
        left: 10px;
        top: 76px;
        font-size: 12px;
    }

    .element-item.alkali {
        background: #F00;
        background: hsl(0, 100%, 50%);
    }

    .element-item.alkaline-earth {
        background: #F80;
        background: hsl(36, 100%, 50%);
    }

    .element-item.lanthanoid {
        background: #FF0;
        background: hsl(72, 100%, 50%);
    }

    .element-item.actinoid {
        background: #0F0;
        background: hsl(108, 100%, 50%);
    }

    .element-item.transition {
        background: #0F8;
        background: hsl(144, 100%, 50%);
    }

    .element-item.post-transition {
        background: #0FF;
        background: hsl(180, 100%, 50%);
    }

    .element-item.metalloid {
        background: #08F;
        background: hsl(216, 100%, 50%);
    }

    .element-item.diatomic {
        background: #00F;
        background: hsl(252, 100%, 50%);
    }

    .element-item.halogen {
        background: #F0F;
        background: hsl(288, 100%, 50%);
    }

    .element-item.noble-gas {
        background: #F08;
        background: hsl(324, 100%, 50%);
    }
</style>

<h1>Isotope - filtering with search field</h1>

<p><input type="text" class="quicksearch" placeholder="Search" /></p>

<div class="grid">
    <div class="element-item transition metal " data-category="transition">
        <h3 class="name">Mercury</h3>
        <p class="symbol">Hg</p>
        <p class="number">80</p>
        <p class="weight">200.59</p>
    </div>
    <div class="element-item metalloid " data-category="metalloid">
        <h3 class="name">Tellurium</h3>
        <p class="symbol">Te</p>
        <p class="number">52</p>
        <p class="weight">127.6</p>
    </div>
    <div class="element-item post-transition metal " data-category="post-transition">
        <h3 class="name">Bismuth</h3>
        <p class="symbol">Bi</p>
        <p class="number">83</p>
        <p class="weight">208.980</p>
    </div>
    <div class="element-item post-transition metal " data-category="post-transition">
        <h3 class="name">Lead</h3>
        <p class="symbol">Pb</p>
        <p class="number">82</p>
        <p class="weight">207.2</p>
    </div>
    <div class="element-item transition metal " data-category="transition">
        <h3 class="name">Gold</h3>
        <p class="symbol">Au</p>
        <p class="number">79</p>
        <p class="weight">196.967</p>
    </div>
    <div class="element-item alkali metal " data-category="alkali">
        <h3 class="name">Potassium</h3>
        <p class="symbol">K</p>
        <p class="number">19</p>
        <p class="weight">39.0983</p>
    </div>
    <div class="element-item alkali metal " data-category="alkali">
        <h3 class="name">Sodium</h3>
        <p class="symbol">Na</p>
        <p class="number">11</p>
        <p class="weight">22.99</p>
    </div>
    <div class="element-item transition metal " data-category="transition">
        <h3 class="name">Cadmium</h3>
        <p class="symbol">Cd</p>
        <p class="number">48</p>
        <p class="weight">112.411</p>
    </div>
    <div class="element-item alkaline-earth metal " data-category="alkaline-earth">
        <h3 class="name">Calcium</h3>
        <p class="symbol">Ca</p>
        <p class="number">20</p>
        <p class="weight">40.078</p>
    </div>
    <div class="element-item transition metal " data-category="transition">
        <h3 class="name">Rhenium</h3>
        <p class="symbol">Re</p>
        <p class="number">75</p>
        <p class="weight">186.207</p>
    </div>
    <div class="element-item post-transition metal " data-category="post-transition">
        <h3 class="name">Thallium</h3>
        <p class="symbol">Tl</p>
        <p class="number">81</p>
        <p class="weight">204.383</p>
    </div>
    <div class="element-item metalloid " data-category="metalloid">
        <h3 class="name">Antimony</h3>
        <p class="symbol">Sb</p>
        <p class="number">51</p>
        <p class="weight">121.76</p>
    </div>
    <div class="element-item transition metal " data-category="transition">
        <h3 class="name">Cobalt</h3>
        <p class="symbol">Co</p>
        <p class="number">27</p>
        <p class="weight">58.933</p>
    </div>
    <div class="element-item lanthanoid metal inner-transition " data-category="lanthanoid">
        <h3 class="name">Ytterbium</h3>
        <p class="symbol">Yb</p>
        <p class="number">70</p>
        <p class="weight">173.054</p>
    </div>
    <div class="element-item noble-gas nonmetal " data-category="noble-gas">
        <h3 class="name">Argon</h3>
        <p class="symbol">Ar</p>
        <p class="number">18</p>
        <p class="weight">39.948</p>
    </div>
    <div class="element-item diatomic nonmetal " data-category="diatomic">
        <h3 class="name">Nitrogen</h3>
        <p class="symbol">N</p>
        <p class="number">7</p>
        <p class="weight">14.007</p>
    </div>
    <div class="element-item actinoid metal inner-transition " data-category="actinoid">
        <h3 class="name">Uranium</h3>
        <p class="symbol">U</p>
        <p class="number">92</p>
        <p class="weight">238.029</p>
    </div>
    <div class="element-item actinoid metal inner-transition " data-category="actinoid">
        <h3 class="name">Plutonium</h3>
        <p class="symbol">Pu</p>
        <p class="number">94</p>
        <p class="weight">(244)</p>
    </div>
</div>

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script src="https://unpkg.com/isotope-layout@3/dist/isotope.pkgd.min.js"></script>

<script>
    // quick search regex
    var qsRegex;
    // init Isotope
    var $grid = $('.grid').isotope({
        itemSelector: '.element-item',
        layoutMode: 'fitRows',
        filter: function() {
            return qsRegex ? $(this).text().match(qsRegex) : true;
        }
    });
    // use value of search field to filter
    var $quicksearch = $('.quicksearch').keyup(debounce(function() {
        qsRegex = new RegExp($quicksearch.val(), 'gi');
        $grid.isotope();
    }, 200));
    // debounce so filtering doesn't happen every millisecond
    function debounce(fn, threshold) {
        var timeout;
        threshold = threshold || 100;
        return function debounced() {
            clearTimeout(timeout);
            var args = arguments;
            var _this = this;

            function delayed() {
                fn.apply(_this, args);
            }
            timeout = setTimeout(delayed, threshold);
        };
    }
</script>