emojis-github.html

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<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Emojis in GitHub</title>
  <style>
    body { font-family: Arial, Helvetica, sans-serif; }
    img { height: 2em; }
    .hide { display: none; }
  </style>
</head>
<body>
  <h1>Emojis list from <a></a></h1>
  <p>Hover/click an icon to display emoji code. You can filter them: <input oninput="filterEmojis(this.value)"></input></p>
  <div id="emojis"></div>
  <script>
    var url = "https://api.github.com/emojis";
    document.querySelector('a').href = url;
    document.querySelector('a').textContent = url;

    var emojis;
    window.onload = () => {
      var xhttp = new XMLHttpRequest();
      xhttp.onreadystatechange = function () {
        if (this.readyState == 4 && this.status == 200) {
          emojis = Object.entries(JSON.parse(this.response));
          loadEmojis(emojis);
        }
      };
      xhttp.onerror = e => console.error('Error in xhttpReq: ' + e);
      xhttp.open("GET", url, true);
      xhttp.send();
    }

    function loadEmojis(emojis){
      let emojisDiv = document.querySelector('#emojis');
      for (var property of emojis) {
        let item = document.createElement('img');
        let code = property[0];
        item.id = code;
        item.src = property[1];
        item.title = ':' + code + ':';
        item.onclick = () => alert(':' + code + ':');
        emojisDiv.appendChild(item);
      }
    }

    function filterEmojis(filter){
      let v = [];
      emojis.filter(e => e[0].includes(filter)).forEach(e => v.push(e[0]));
      document.querySelectorAll('#emojis img').forEach(i => i.className = (v.indexOf(i.id) == -1) ? "hide" : "");
    }
  </script>
</body>
</html>