1. Rest parameters

    Allows representation of an indefinite number of arguments as an array.

  2. URLSearchParams

    The URLSearchParams interface defines utility methods to work with the query string of a URL.

  3. audionode api: disconnect: `input` parameter

  4. audioworkletnode api: parameters

  5. domtokenlist api: add: multiple parameters for `add()`

  6. domtokenlist api: toggle: `force` parameter

  7. element api: animate: `options.id` parameter

  8. element api: scroll: `options.left` parameter

  9. element api: scroll: `options.top` parameter

  10. fetch api: `init.browsingtopics` parameter

  11. fetch api: `init.keepalive` parameter

  12. fetch api: `init.priority` parameter

  13. fetch api: `init.referrerpolicy` parameter

  14. fetch api: `init.signal` parameter

  15. formdata api: append: `filename` parameter

  16. history api: pushstate: whether the `unused` parameter is used

  17. idbfactory api: open: `options` parameter for setting temporary/persistent storage.

  18. navigator api: share: `data.files` parameter

  19. navigator api: share: `data.text` parameter

  20. range api: collapse: `tostart` parameter is optional

  21. response api: `response()` constructor: `body` parameter is optional

  22. selection api: collapse: `node` parameter is nullable

  23. selection api: collapse: `offset` parameter is optional

  24. selection api: extend: `offset` parameter is optional

  25. setinterval api: supports parameters for callback

  26. settimeout api: supports parameters for callback

  27. window api: open: `features` parameter accepts `"attributionsrc"` value

  28. window api: open: `features` parameter accepts `"popup"` value

  29. window api: postmessage: `transfer` parameter

  30. window api: scrollto: `options.top` parameter

  31. window api: scroll: `options.left` parameter

  32. window api: scroll: `options.top` parameter

  33. worker api: `worker()` constructor: `options.name` parameter

  34. worker api: `worker()` constructor: `options.type` parameter

  35. types: <color>: `hsl()` (hsl color model): alpha parameter

  36. types: <color>: `hsl()` (hsl color model): mix `<percentage>` and `<number>` in parameters

  37. types: <color>: `hwb()` (hwb color model): mix `<percentage>` and `<number>` in parameters

  38. types: <color>: `lab()` (lab color model): mix `<percentage>` and `<number>` in parameters

  39. types: <color>: `lch()` (lch color model): mix `<percentage>` and `<number>` in parameters

  40. types: <color>: `rgb()` (rgb color model): alpha parameter

  41. types: <color>: `rgb()` (rgb color model): mix `<percentage>` and `<number>` in parameters

  42. html element: param

  43. html element: param: name

  44. html element: param: type

  45. html element: param: value

  46. html element: param: valuetype

  47. javascript function: default parameters

  48. javascript function: default parameters: destructured parameter with default value assignment

  49. javascript function: default parameters: parameters without defaults after default parameters

  50. javascript function: rest parameters: destructuring rest parameters