라이브러리 없이 modal창 만들기

모달 참고 블로그

html

<!-- Trigger/Open The Modal -->
    <button id="myBtn">Open Modal</button>
 
    <!-- The Modal -->
    <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>

css

 /* 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: 50%; /* 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;
        }

js

 // 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";
            }
        }