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<!DOCTYPE html>
<html lang="en">
    <head>
        <title>Summernote Test</title>

        <link href="https://netdna.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.css" rel="stylesheet">
        <link href="https://netdna.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.css" rel="stylesheet">
        <link href="https://cdnjs.cloudflare.com/ajax/libs/summernote/0.7.0/summernote.css" rel="stylesheet">
    </head>
    <body>
        <div class="container">
            <h1>Summernote Test</h1>
            <div class="row">
                <div class="form-group">
                    <textarea name="summernote" id="summernote" class="summernote form-control"></textarea>
                </div>
            </div>
        </div>
        <script src="https://code.jquery.com/jquery-2.1.4.min.js"></script>
        <script src="https://netdna.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.js"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/summernote/0.7.0/summernote.js"></script>
        <script>
           $('#summernote').summernote('code', 'test');
        </script>
    </body>
</html>