Firefox 70 para programadores

Este artigo fornece informaçaõ acerca das alterações no Firefox 70 que irão afetar od programadores. O Firefox 70 é a versão Beta atual do Firefox, e irá ser distribuida no dia 22 de outubro de 2019.

• An icon will be displayed next to invalid or unsupported CSS rules in the Rules pane of the Page Inspector (bug 1306054).

Removals

No changes.

 Removals

• Opacity values like for opacity or stop-opacity can now be percentages (bug 1562086).
• grid-auto-columns and grid-auto-rows now accept multiple track-size values (bug 1339672).
• A number of text-related CSS properties have been enabled by default (bug 1573631):
  • text-decoration-thickness.
  • text-underline-offset.
  • text-decoration-skip-ink. The default value is auto, which means that by default underlines and overlines are now interrupted where they would otherwise cross over a glyph.
• The display property now accepts two keywords for the inner and the outer display type (bug 1038294, bug 1105868 and bug 1557825).
• The font-size property now accepts the new keyword xxx-large. (bug 1553545).
• The :visited pseudo-class no longer matches <link> elements, for logic and performance reasons (bug 1572246; see Intent to ship: Make <link> elements always unvisited and [selectors] :link and <link> for more reasoning as to why).
• We now support an auto value for the quotes property (bug 1421938).
• Stylesheets contained in <style> elements are now cached for reuse, to improve performance (bug 1480146). Note that this currently doesn't include stylesheets that contain @import rules.
• The <ratio> type now accepts <number> / <number> or a single <number> as a value. (bug 1565562).

Removals

• Retiring support for 3-valued <position> (excluding background)(bug 1559276). See site compat note.
• none is now invalid in counter / counters — a change which makes the Level 3 spec match CSS 2.1 bug 1576821).

No changes.

Removals

• Add support for numeric separators. bug 1435818.

Removals

• The back(), forward(), and go() methods are now asynchronous. Add a listener to the popstate event to get notification that navigation has completed bug 1563587.

Novas APIs

DOM

• Add DOMMatrix, DOMPoint, etc. support in web workers (bug 1420580).

Eventos DOM

Service workers

Media, Web Audio, and WebRTC

Canvas and WebGL

• We now support CanvasRenderingContext2D.getTransform(), and the newer variant of CanvasRenderingContext2D.setTransform() that accepts a matrix object as a parameter rather than multiple parameters representing the individual components of the matrix (bug 928150).

Removals

No changes.

Removals

No changes.

Removals

No changes.

Removals

Sem alterações.

Removals

Sem alterações.

Removals

• SCompatibilidade de Site para o Firefox 70