Same Origin Policy – AJAX & using Public APIs

by

There are few known methods to work around the Same Origin Policy. One popular technique is to use “Script Tag Injection” such as in JSONP. Since the <script> tag is not constrained by the Same Origin Policy, a script on a third-party domain can provide executable code that interacts with a provided callback function. You may want to check out the “Tips and Tricks” section in the following article for further reading on the topic:

You may also be interested in checking out the following Stack Overflow post for further reading on other techniques to work around the Same Origin Policy:

UPDATE: Further the updated question:

Quoting from the jQuery documentation on $.getJSON():

If the URL includes the string “callback=?” in the URL, the request is treated as JSONP instead.

More Related Contents:

  1. Ways to circumvent the same-origin policy
  2. Send POST data using XMLHttpRequest
  3. Origin is not allowed by Access-Control-Allow-Origin
  4. Add a “hook” to all AJAX requests on a page
  5. What is the cleanest way to get the progress of JQuery ajax request?
  6. jQuery has deprecated synchronous XMLHTTPRequest
  7. What’s the best way to retry an AJAX request on failure using jQuery?
  8. XMLHttpRequest status 0 (responseText is empty)
  9. Why am I seeing an “origin is not allowed by Access-Control-Allow-Origin” error here? [duplicate]
  10. Is onload equal to readyState==4 in XMLHttpRequest?
  11. How to upload a file using jQuery.ajax and FormData
  12. How can I send the “&” (ampersand) character via AJAX?
  13. What do the different readystates in XMLHttpRequest mean, and how can I use them?
  14. Empty responseText from XMLHttpRequest
  15. WebKit “Refused to set unsafe header ‘content-length'”
  16. Intercept fetch() API requests and responses in JavaScript
  17. XMLHttpRequest to Post HTML Form
  18. Javascript: Overriding XMLHttpRequest.open()
  19. Get HTML code using JavaScript with a URL
  20. Is it possible for XHR HEAD requests to not follow redirects (301 302)
  21. XmlHttpRequest onprogress interval
  22. Overriding XMLHttpRequest.open()
  23. XMLHttpRequest 206 Partial Content
  24. Ajax – 500 Internal Server Error
  25. Microsoft Edge blocked cross-domain requests sent to IPs in same private network CIDR
  26. IE10/IE11 Abort Post Ajax Request After Clearing Cache with error “Network Error 0x2ef3”
  27. Phantom JS synchronous AJAX request : NETWORK_ERR: XMLHttpRequest Exception 101
  28. Differentiating Between an AJAX Call / Browser Request
  29. Adding X-CSRF-Token header globally to all instances of XMLHttpRequest();
  30. XMLHttpRequest testing in Jest

Leave a Comment