1. Explicit descendant combinator >>

    An explicit, non-whitespace spelling of the descendant combinator. `A >> B` is equivalent to `A B`.

  2. Lookbehind in JS regular expressions

    The positive lookbehind (`(?<= )`) and negative lookbehind (`(?<! )`) zero-width assertions in JavaScript regular expressions can be used to ensure a pattern is preceded by another pattern.

  3. WebAssembly Import/Export of Mutable Globals

    An extension to WebAssembly import and export of mutable global variables

  4. audioparam api: exponentialramptovalueattime

  5. cookiestore api: get: `expires` in return value

  6. delegatedinktrailpresenter api: expectedimprovement

  7. event api: explicitoriginaltarget

  8. languagedetector api: `expectedinputlanguages` property

  9. mediakeysession api: expiration

  10. mlgraphbuilder api: exp

  11. mlgraphbuilder api: expand

  12. pushsubscription api: expirationtime

  13. rtccertificate api: expires

  14. storagebucket api: expires

  15. subtlecrypto api: exportkey

  16. subtlecrypto api: exportkey: `ed25519` algorithm

  17. subtlecrypto api: exportkey: `x25519` algorithm

  18. summarizer api: `expectedcontextlanguages` property

  19. summarizer api: `expectedinputlanguages` property

  20. svgcomponenttransferfunctionelement api: exponent

  21. webtransport api: exportkeyingmaterial

  22. css at-rule: `@media`: `calc()` expressions

  23. css property: font-stretch: expanded

  24. css property: font-width: expanded

  25. types: `exp()`

  26. html element: link: rel: rel=expect

  27. html attribute: exportparts

  28. headers http header: expect-ct

  29. headers http header: expires

  30. javascript built-in: math: exp

  31. javascript built-in: math: expm1

  32. grammar: regular expression literals (`/ab+c/g`)

  33. javascript operator: exponentiation (`**`)

  34. javascript operator: exponentiation assignment (`x **= y`)

  35. javascript operator: `function` expression

  36. javascript statement: export

  37. javascript statement: export: arbitrary module namespace identifier names

  38. javascript statement: export: `default` keyword with `export`

  39. javascript statement: export: `export * as namespace`

  40. api: instance: exports

  41. api: module: `exports()` static method

  42. lookahead assertions in js regular expressions

  43. internet explorer features

  44. microsoft internet explorer