How to apply CodeMirror in Bootstrap Modal

To apply CodeMirror in a Bootstrap Modal, you can follow these steps:

  1. Include the necessary CSS and JavaScript files for CodeMirror and Bootstrap in your HTML file. You can find the CDN links for these files on their respective websites.

  2. Create a textarea element inside your Bootstrap Modal where you want to apply CodeMirror. Give it an id attribute so that we can target it later.

  3. In your JavaScript code, initialize CodeMirror on the textarea element using its id. You can do this by calling the CodeMirror.fromTextArea() function and passing the textarea id as the first parameter.

  4. Customize the CodeMirror instance as per your requirements. You can set options such as the programming language mode, theme, line numbers, etc. Refer to the CodeMirror documentation for more details on available options.

  5. Open the Bootstrap Modal when needed. CodeMirror should now be applied to the textarea inside the Modal.

Here is an example to illustrate the above steps:

<!DOCTYPE html>
<html>
<head>
  <!-- Include required CSS and JS files -->
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.62.0/codemirror.min.css">
  <script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.62.0/codemirror.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.62.0/mode/javascript/javascript.min.js"></script>
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
  <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
</head>
<body>
  <!-- Button to open the Bootstrap Modal -->
  <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#myModal">Open Modal</button>

  <!-- Bootstrap Modal -->
  <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
    <div class="modal-dialog" role="document">
      <div class="modal-content">
        <div class="modal-header">
          <h5 class="modal-title" id="myModalLabel">CodeMirror in Modal</h5>
          <button type="button" class="close" data-dismiss="modal" aria-label="Close">
            <span aria-hidden="true">&times;</span>
          </button>
        </div>
        <div class="modal-body">
          <!-- Textarea where CodeMirror will be applied -->
          <textarea id="codeTextArea"></textarea>
        </div>
        <div class="modal-footer">
          <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
          <button type="button" class="btn btn-primary">Save changes</button>
        </div>
      </div>
    </div>
  </div>

  <script>
    // Initialize CodeMirror on the textarea
    var codeTextArea = document.getElementById("codeTextArea");
    var codeMirrorEditor = CodeMirror.fromTextArea(codeTextArea, {
      mode: "javascript",
      theme: "default",
      lineNumbers: true
    });
  </script>
</body>
</html>

This example demonstrates how to apply CodeMirror to a textarea inside a Bootstrap Modal. The CodeMirror library is included using CDN links, and the necessary Bootstrap CSS and JavaScript files are also included. The CodeMirror instance is initialized on the textarea element with the id "codeTextArea", and it is customized with options such as the mode (set to "javascript" in this example) and line numbers. The Bootstrap Modal is triggered by a button, and the textarea inside the Modal is where CodeMirror is applied.