1. Asynchronous Clipboard API

    A modern, asynchronous Clipboard API based on Promises

  2. CSS Flexible Box Layout Module

    Method of positioning elements in horizontal or vertical stacks. Support includes all properties prefixed with `flex`, as well as `display: flex`, `display: inline-flex`, `align-content`, `align-items`, `align-self`, `justify-content` and `order`.

  3. XMLHttpRequest advanced features

    Adds more functionality to XHR (aka AJAX) requests like file uploads, transfer progress information and the ability to send form data. Previously known as [XMLHttpRequest Level 2](https://www.w3.org/TR/2012/WD-XMLHttpRequest-20120117/), these features now appear simply in the XMLHttpRequest spec.

  4. cssimportrule api: href

  5. htmlanchorelement api: href

  6. htmlanchorelement api: hreflang

  7. htmlareaelement api: href

  8. htmlbaseelement api: href

  9. htmllinkelement api: href

  10. htmllinkelement api: hreflang

  11. location api: href

  12. stylesheet api: href

  13. svgaelement api: href

  14. svgaelement api: hreflang

  15. svgfeimageelement api: href

  16. svgfilterelement api: href

  17. svggradientelement api: href

  18. svgimageelement api: href

  19. svgmpathelement api: href

  20. svgpatternelement api: href

  21. svgscriptelement api: href

  22. svgtextpathelement api: href

  23. svguseelement api: href

  24. url api: href

  25. workerlocation api: href

  26. html element: area: href

  27. html element: area: hreflang

  28. html element: a: href

  29. html element: a: hreflang

  30. html element: a: href: `href = '#top'`

  31. html element: base: href

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

  33. html element: hr

  34. html element: hr: align

  35. html element: hr: color

  36. html element: hr: noshade

  37. html element: hr: size

  38. html element: hr: width

  39. html element: link: href

  40. html element: link: hreflang

  41. html element: menu: `<hr>` creates a separator

  42. attributes: href

  43. svg element: a: href

  44. svg element: a: hreflang

  45. svg element: a: `xlink:href`

  46. svg element: cursor: href

  47. svg element: feimage: href

  48. svg element: pattern: href

  49. svg element: textpath: href

  50. svg element: use: href