Javascript HTTP Requests

A basic introduction to how XMLHttpRequests work in Javascript. Written as a supplement to Eloquent Javascript Ch. 17 by Marijn Haverbeke.

Transcript

1. HTTP Requests in Javascript Stephanie Marx
3. Constructor initializes an XMLHttpRequest
4. Constructor initializes an XMLHttpRequest We open the request...
5. Constructor initializes an XMLHttpRequest We open the request... send it...
6. Constructor initializes an XMLHttpRequest We open the request... send it... ...and get something back!
10. method of request
11. method of request POST GET PUT DELETE
12. method of request POST CREATE GET READ PUT UPDATE DELETE DELETE
13. method of request
14. method of request URL
15. method of request URL Should we do this asynchronously?
16. method of request URL Should we do this asynchronously? true Notification of completed transaction is provided with event listeners false send() method doesn’t return until the response is received
17. method of request URL Should we do this asynchronously?
22. name of the header
23. name of the header value to set as body
24. name of the header value to set as body
25. name of the header value to set as body
27. text/plain text/html application/json
31. request body
32. request body GET null POST
33. request body