YQL allows users to perform several tasks that would otherwise be difficult including: 1) Converting XML APIs to JSON for easier parsing 2) Making cross-domain AJAX calls by using JSONP instead of XMLHttpRequest 3) Parsing invalid HTML on the cloud to extract necessary information 4) Scraping JavaScript-only pages through a Chrome extension called ChromYQLip 5) Converting static web pages into live widgets by querying the data through YQL

1. 10 THINGS
Which you can’t do
without YQL!
Markandey Singh

2. I am
Markandey
Singh,
I work @ Yahoo!
2

3. &
I am a JavaScript
Hacker
javacript != java
3

4. YQL
4

5. 10 THINGS
Which you can’t do
without YQL!
5

6. This is
workshop
session 6

7. And mostly about
{code}
7

8. 8

9. 9

10. 10

11. #1
Converting Any XML
REST API to JSON API
11

12. http://www.cleartrip.com/places/hotels/info/41750
12

13. XML API JSON API
select * from xml
where url=‘……’
13

14. 14

15. #2
Cross Domain AJAX
15

16. Domain-2
Domain-1
XMLHttpRequest
16

17. Domain-2
Domain-1
✗
XMLHttpRequest
17

18. Domain-1
Domain-2
XMLHttpRequest
18

19. Domain-1
Domain-2
JSONP
✔
19

20. 20

21. #3
Parsing HTML on cloud
21

22. http://www.purplegene.com/static/invalid_html_example.html
22

23. http://www.purplegene.com/static/invalid_html_example.html
Div , body and html is not closed
23

24. http://www.purplegene.com/static/invalid_html_example.html
Div , body and html is not closed
24

25. 25

26. #4
JavaScript only page
scraping
26

27. http://passportindia.gov.in/AppOnlineProject/online/chiefOfficer
27

28. ChromYQLip
28

29. 29

30. #5
Converting dead web
into live widget
30

31. Computer jokes
http://www.guy-sports.com/humor/computers/computer_10laws.htm
31

32. 32

33. #6
creating logic as
service
33

34. 34

35. 35

36. #7
hiding JavaScript
execution secret
36

37. SET max_results='1' ON
youtube.search;select * from
youtube.search where query="louis ck"
37

38. SET max_results='1' ON
youtube.search;select * from
youtube.search where query="louis ck"
38

39. 39

40. #8
OAuth client without
having a server
40

41. http://derek.io/blog/2010/how-to-secure-oauth-in-javascript/ 41

42. Twitter oauth
SELECT * FROM twitter.STATUS.timeline.friends
WHERE oauth_consumer_key = '9DiJt6Faw0Dyr61tVOATA'
AND oauth_consumer_secret =
'XBF9j0B2SZAOWg44QTu6fCwYy5JtivoNNpvJMs6cA'
AND oauth_token = '18342542-NkgUoRinvdJVILEwCUQJ3sL2CIm2ZwzS5jjj2Lg7y'
AND oauth_token_secret =
'D6ewAzsueTzQmrAJGFH0phV5zgWT88FOtcMeqW4YeI';
42

43. Twitter oauth
SELECT * FROM twitter.STATUS.timeline.friends
WHERE oauth_consumer_key = '9DiJt6Faw0Dyr61tVOATA'
AND oauth_consumer_secret =
'XBF9j0B2SZAOWg44QTu6fCwYy5JtivoNNpvJMs6cA'
AND oauth_token = '18342542-NkgUoRinvdJVILEwCUQJ3sL2CIm2ZwzS5jjj2Lg7y'
AND oauth_token_secret =
'D6ewAzsueTzQmrAJGFH0phV5zgWT88FOtcMeqW4YeI';
oauth_consumer_key
oauth_consumer_secret YQL
oauth_token
Local
storage
oauth_token
43

44. 44

45. https://chrome.google.com/webstore/detail/g
gdpdjbjioohmgdhmegcbnodpdcamhpj
45

46. 46

47. 47

48. https://github.com/markandey/mojito-example-
youtube
48

49. http://www.markandey.com/
49

50. Thank You!!
50