dzcode.talk/JAVASCRIPT/learning/javascript-traversey/filt-list.html at master · zed-dz/dzcode.talk · GitHub

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<!DOCTYPE html>
<html lang="en">

<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">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0-rc.2/css/materialize.min.css">
  <title>filt list</title>

</head>

<body>


  <div class="container">
    <h1 class="center-align">
      My Contacts
    </h1>
    <input type="text" id="filterInput" placeholder="search names ...">
    <ul class="collection with-header" id="names">
      <li class="collection-header">
        <h5>A</h5>
      </li>
      <li class="collection-item">
        <a href="#">Abe</a>
      </li>

      <li class="collection-item">
        <a href="#">Adam</a>
      </li>

      <li class="collection-item">
        <a href="#">Alan</a>
      </li>

      <li class="collection-item">
        <a href="#">Anna</a>
      </li>
      <li class="collection-header">
        <h5>B</h5>
      </li>
      <li class="collection-item">
        <a href="#">Belkacem</a>
      </li>

      <li class="collection-item">
        <a href="#">Brad</a>
      </li>

      <li class="collection-item">
        <a href="#">Boualem</a>
      </li>

      <li class="collection-item">
        <a href="#">Bob</a>
      </li>
      <li class="collection-header">
        <h5>C</h5>
      </li>
      <li class="collection-item">
        <a href="#">Cecile</a>
      </li>

      <li class="collection-item">
        <a href="#">Celia</a>
      </li>

      <li class="collection-item">
        <a href="#">Cendrila</a>
      </li>

    </ul>
  </div>


  <script>
    document.getElementById('filterInput').addEventListener('keyup', filterCheck);

    function filterCheck() {

      let filterValue = document.getElementById('filterInput').value.toUpperCase();

      let li = document.getElementById('names').querySelectorAll('li.collection-item');

      for (let i = 0; i < li.length; i++) {

        let a = li[i].getElementsByTagName('a')[0];

        if (a.innerHTML.toUpperCase().indexOf(filterValue) > -1) {
          li[i].style.display = '';
        } else {
          li[i].style.display = 'none';
        }
        // if (a.innerHTML.toUpperCase().match(filterValue)) {
        //   li[i].style.display = '';
        // } else {
        //   li[i].style.display = 'none';
        // }
      }
    }
  </script>

</body>

</html>