Harvard Extension School
CSCI E-12 Fundamentals of Web Site Development | Fall 2019

## Same Origin Policy, CORS, and JSONP

When working with Ajax, it is important to understand some basic concepts of web application security. Some concepts we'll briefly describe are:

- Same Origin Policy
- CORS (Cross Origin Resource Sharing)
- JSONP

These are important to understand since the browser restricts the Ajax calls allowed.

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