Home > JS > Useful Scripts > How To Create a Modal Box
How To Create a Modal Box

A modal is a dialog box/popup window that is displayed on top of the current page:
<!DOCTYPE html>
<html>
<head>
    <meta charset='utf-8'>
    <meta name='viewport' content='width=device-width, initial-scale=1'>
    <title>ACFBOOT demo platform</title>
    <link href='https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css' rel='stylesheet' integrity='sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC' crossorigin='anonymous'>
    <link rel='stylesheet' id='fa-css'  href='https://use.fontawesome.com/releases/v5.11.2/css/all.css?ver=5.6.4' type='text/css' media='all' />
    <script src='https://code.jquery.com/jquery-3.6.0.js' integrity='sha256-H+K7U5CnXl1h5ywQfKtSj8PCmoN9aaq30gDh27Xc0jk=' crossorigin='anonymous'></script>
    <style>
       body{
            margin: 0px;
        }
</style>
</head>
<body>
<style>

/* The Modal (background) */
.modal {
  display: none; /* Hidden by default */
  position: fixed; /* Stay in place */
  z-index: 1; /* Sit on top */
  left: 0;
  top: 0;
  width: 100%; /* Full width */
  height: 100%; /* Full height */
  overflow: auto; /* Enable scroll if needed */
 background-color: rgb(0,0,0); /* Fallback color */
 background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
}

/* Modal Content/Box */
.modal-content {
 background-color: #fefefe;
  margin: 15% auto; /* 15% from the top and centered */
  padding: 20px;
  border: 1px solid #888;
  width: 80%; /* Could be more or less, depending on screen size */
}

/* The Close Button */
.close {
  color: #aaa;
  float: right;
  font-size: 28px;
  font-weight: bold;
}

.close:hover,
.close:focus {
  color: black;
 text-decoration: none;
 cursor: pointer;
}

</style>

<button id="myBtn">Open Modal</button>

<div id="myModal" class="modal">

 <!-- Modal content -->
 <div class="modal-content">
  <span class="close">&times;</span>
  <p>Some text in the Modal..</p>
 </div>

</div>

<script>

// Get the modal
var modal = document.getElementById("myModal");

// Get the button that opens the modal
var btn = document.getElementById("myBtn");

// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];

// When the user clicks on the button, open the modal
btn.onclick = function() {
  modal.style.display = "block";
}

// When the user clicks on <span> (x), close the modal
span.onclick = function() {
  modal.style.display = "none";
}

// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
 if (event.target == modal) {
  modal.style.display = "none";
  }
}

</script>
</body></html>