1. CSS image-set

    Method of letting the browser pick the most appropriate CSS image from a given set.

  2. CSS font-feature-settings

    Method of applying advanced typographic and language-specific font features to supported OpenType fonts.

  3. Efficient Script Yielding: setImmediate()

    Yields control flow without the minimum delays enforced by setTimeout

  4. Srcset and sizes attributes

    The `srcset` and `sizes` attributes on `img` (or `source`) elements allow authors to define various image resources and "hints" that assist a user agent to determine the most appropriate image source to display (e.g. high-resolution displays, small monitors, etc).

  5. dommatrix api: setmatrixvalue

  6. element api: setattribute

  7. element api: setattributenode

  8. element api: setattributenodens

  9. element api: setattributens

  10. element api: setcapture

  11. element api: sethtml

  12. element api: sethtmlunsafe

  13. element api: setpointercapture

  14. fence api: setreporteventdataforautomaticbeacons

  15. fence api: setreporteventdataforautomaticbeacons: separate `reserved.top_navigation_start` and `reserved.top_navigation_commit` `eventtype` values

  16. formdata api: set

  17. headers api: set

  18. mediakeys api: setservercertificate

  19. navigator api: setappbadge

  20. range api: setend

  21. range api: setendafter

  22. range api: setendbefore

  23. range api: setstart

  24. range api: setstartafter

  25. range api: setstartbefore

  26. selection api: setbaseandextent

  27. serialport api: setsignals

  28. setinterval api

  29. setinterval api: supports parameters for callback

  30. setinterval api: available in workers

  31. settimeout api

  32. settimeout api: supports parameters for callback

  33. settimeout api: available in workers

  34. storage api: setitem

  35. window api: setimmediate

  36. window api: setresizable

  37. headers http header: set-cookie

  38. headers http header: set-cookie: cookie prefixes

  39. headers http header: set-cookie: `httponly`

  40. headers http header: set-cookie: `max-age`

  41. headers http header: set-cookie: `partitioned`

  42. headers http header: set-cookie: `samesite`: `samesite=lax`

  43. headers http header: set-cookie: `samesite`: defaults to `lax`

  44. headers http header: set-cookie: `samesite`: `samesite=none`

  45. headers http header: set-cookie: `samesite`: url scheme-aware ("schemeful")

  46. headers http header: set-cookie: `samesite`: secure context required

  47. headers http header: set-cookie: `samesite`: `samesite=strict`

  48. headers http header: set-login

  49. svg element: set

  50. svg element: set: to