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Redactor

Block ID

Click on any block, then on the 'control' menu icon on the left and you will see the 'ID' option in the dropdown. Try adding some ID to any block.

Code

<!DOCTYPE html>
<html>
    <head>
        <title>Redactor</title>
        <meta charset="utf-8">

        <!-- css -->
        <link rel="stylesheet" href="/your-folder/redactor.css" />
    </head>
    <body>
        <!-- element -->
        <textarea id="entry">...</textarea>

        <!-- js -->
        <script src="/your-folder/redactor.js"></script>
        <script src="/your-folder/plugins/blockid/blockid.js"></script>

        <!-- call -->
        <script>
        Redactor('#entry', {
            plugins: ['blockid']
        });
        </script>
    </body>
</html>