JSONP, or JSON-P (JSON with Padding), is a historical JavaScript technique for requesting data by loading a <script> element,[1] which is an element intended to load ordinary JavaScript. It was proposed by Bob Ippolito in 2005.[2] JSONP enables sharing of data bypassing same-origin policy, which disallows running JavaScript code to read media DOM elements or XMLHttpRequest data fetched from outside the page's originating site. The originating site is indicated by a combination of URI scheme, hostname, and port number.
JSONP is vulnerable to the data source replacing the innocuous function call with malicious code, which is why it has been superseded by cross-origin resource sharing (available since 2009[3]) in modern applications.
^Cite error: The named reference JSON-P was invoked but never defined (see the help page).
^Ippolito, Bob (5 December 2005). "Remote JSON - JSONP". Bob Ippolito on Haskell, Python, Erlang, JavaScript, etc. Archived from the original on 8 June 2012. Retrieved 10 February 2017.
^"Cross-Origin Resource Sharing". Can I use... Retrieved 4 May 2020.
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