The JSON Field stores JSON data and displays it inside script tags in the theme.
Placing a JSON field using the Display Fields system in Custom Fields does not show any visible output. The data is output inside of a <script> tag and is only shown in the HTML content of the page.
Content Entry Form
JSON data is entered into a simple text box. An option to properly format the data is included.
Content Entry Settings & Validation Options
No special content entry settings are available for JSON fields.