1. cssimportrule api: href

2. htmlanchorelement api: href

3. htmlareaelement api: href

4. htmlareaelement api: hreflang

5. htmlbaseelement api: href

6. htmlbaseelement api: href: `data:` and `javascript:` urls are not allowed

7. htmlbaseelement api: href: tab, newline, and < are not allowed (dangling markup prevention)

8. htmllinkelement api: href

9. htmllinkelement api: hreflang

10. location api: href

11. stylesheet api: href

12. svgaelement api: href

13. svgaelement api: hreflang

14. svgfeimageelement api: href

15. svgfilterelement api: href

16. svgimageelement api: href

17. svgmpathelement api: href

18. svgscriptelement api: href

19. svguseelement api: href

20. url api: href

21. workerlocation api: href

22. html element: area: href

23. html element: area: hreflang

24. html element: a: href

25. html element: a: hreflang

26. html element: a: hreftranslate

27. html element: base: href

28. html element: base: href: `data:` and `javascript:` urls are not allowed

29. html element: base: href: relative uris.

30. html element: hr

31. html element: hr: align

32. html element: hr: color

33. html element: hr: noshade

34. html element: hr: size

35. html element: hr: width

36. html element: link: href

37. html element: link: hreflang

38. elements: a: href

39. elements: a: hreflang

40. svg element: animate: href

41. svg element: a: href

42. svg element: a: hreflang

43. svg element: feimage: href

44. svg element: image: href

45. svg element: mpath: href

46. svg element: pattern: href

47. svg element: script: href

48. svg element: set: href

49. svg element: use: href