dropdown-HTML/hoverclick.html at main · OpenGenus/dropdown-HTML · 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">
    <title>Hover & Click</title>
    <style>
      #colors {
        display: none;
      }
      #colors-to-select:hover #colors {
        display: block;
      }
      #color {
        display: none;
      }
      #color-to-select:hover #color {
        display: block;
      }
      li {
        list-style-type: none;
      }
      body {
        font-family:'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
        font-size: 30px;
        background-color: black;
        margin: 10%;
      }

      a {
        color: rgb(167, 3, 3);
        text-decoration: none;
      }
    </style>
<body>

    <div id="colors-to-select">
      <a href="#">Colors</a>
      <ul id="colors">
        <li>
          <ul id="color-to-select">
          <a href="#"> Blue </a>
          <ul id="color">
            <li> <a href="#">Cobalt</a> </li>
            <li> <a href="#">Turquoise</a> </li>
          </ul>
          </ul>
        </li>
        <li>
          <ul id="color-to-select">
          <a href="#"> Green </a>
          <ul id="color">
            <li> <a href="#">Navy</a> </li>
            <li> <a href="#">Forest</a> </li>
          </ul>
          </ul>
        </li>

        <li>
          <ul id="color-to-select">
          <a href="#"> Red </a>
          <ul id="color">
            <li> <a href="#">Maroon</a> </li>
            <li> <a href="#">Ruby</a> </li>
          </ul>
          </ul>
        </li>

        <li>
          <ul id="color-to-select">
          <a href="#"> Yellow </a>
          <ul id="color">
            <li> <a href="#">Sunshine</a> </li>
            <li> <a href="#">Pale</a> </li>
          </ul>
          </ul>
        </li>

      </ul>
    </div>
    <script>
      document.querySelector("#colors-to-select").addEventListener("click", () => {
        var elt = document.querySelector("#colors").style.display;
        if (elt === "none" || elt === "") {
          document.querySelector("#colors").style.display="block";
        } else {
          document.querySelector("#colors").style.display="none";
        }
      })
    </script>

</body>
</html>