Check https://api.json-content-importer.com/extra/json/freejson.php for some JSON example-data.
This can be displayed with the free JCI-Plugin in this way:
[[jsoncontentimporter url=https://api.json-content-importer.com/extra/json/freejson.php] myfield: {myfield}<br> myfield with invalid link: {myfield:html}<br> myfield with valid link: {myfield:purejsondata,ifNotEmptyAddLeftRight:left##right##}<br> jsontimestamp: {jsontimestamp}<br> formatted jsontimestamp ("172801" is the timezoneoffset in seconds aka 48 hours plus 1 seconds): {jsontimestamp:datetime,d-m-Y H.i.s,172801}<br> jsondate: {jsondate}<br> formatted jsondate ("259202" is the timezoneoffset in seconds aka 72 hours plus 2 seconds): {jsondate:datetime,m-d-Y, H-i-s,259200} [/jsoncontentimporter]]
See it in action:
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