custom dropdown in javascript

To create a custom dropdown in JavaScript, you can start by creating an HTML element to serve as the dropdown container. This can be a <div> element with an associated <button> element that will serve as the dropdown toggle.


<div class="dropdown-container">
  <button class="dropdown-toggle">Select an option</button>
  <ul class="dropdown-menu">
    <li><a href="#">Option 1</a></li>
    <li><a href="#">Option 2</a></li>
    <li><a href="#">Option 3</a></li>
  </ul>
</div>
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Then, you can use CSS to style these elements as needed to create the desired look and feel for your custom dropdown.


.dropdown-container {
  position: relative;
  display: inline-block;
}

.dropdown-toggle {
  padding: 10px;
  background-color: #eee;
  border: none;
  cursor: pointer;
  font-size: 16px;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 1;
  display: none;
}

.dropdown-menu li {
  list-style: none;
  background-color: #fff;
  border: 1px solid #ccc;
}

.dropdown-menu li a {
  display: block;
  padding: 10px;
  text-decoration: none;
  color: #333;
}

.dropdown-menu li a:hover {
  background-color: #f4f4f4;
}
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Finally, you can add JavaScript event listeners to toggle the visibility of the dropdown menu when the dropdown toggle is clicked.


index.tsx
const dropdownToggle = document.querySelector('.dropdown-toggle');
const dropdownMenu = document.querySelector('.dropdown-menu');

dropdownToggle.addEventListener('click', () => {
  if (dropdownMenu.style.display === 'block') {
    dropdownMenu.style.display = 'none';
  } else {
    dropdownMenu.style.display = 'block';
  }
});
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This is a basic example of how to create a custom dropdown in JavaScript. From here, you can add additional functionality and styling as needed to create a more robust and customized dropdown menu.

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