Web platform features explorer

📃 December 2015 release notes

New in Chrome

The following features are now available in Chrome:

  • Array includes(): The includes() method of arrays and typed arrays returns whether a given value appears in the array.
  • :placeholder-shown: The :placeholder-shown CSS pseudo-element selects <input> and <textarea> elements when no value is set and the element's placeholder attribute is not empty. Not to be confused with ::placeholder, which selects the placeholder text itself.
  • Presentation API: The Presentation API shows or controls content on another display, such as a network-connected TV or projector.
  • requestIdleCallback(): The requestIdleCallback() API queues a function that runs in idle browser time, either at the end of a frame or when the user is inactive. Also known as the background tasks API.
  • text-align-last: The text-align-last CSS property sets the alignment of the last line of text before a forced line break.
  • WEBGL_compressed_texture_astc WebGL extension: The WEBGL_compressed_texture_astc extension for WebGL 1.0 and 2.0 contexts adds the Adaptive Scalable Texture Compression format to compressedTexImage2D() and compressedTexSubImage2D().
  • WEBGL_debug_shaders WebGL extension: The WEBGL_debug_shaders extension for WebGL 1.0 and 2.0 contexts adds the getTranslatedShaderSource() method to debug shaders from privileged contexts.

New in Chrome Android

The following features are now available in Chrome Android:

  • Array includes(): The includes() method of arrays and typed arrays returns whether a given value appears in the array.
  • :placeholder-shown: The :placeholder-shown CSS pseudo-element selects <input> and <textarea> elements when no value is set and the element's placeholder attribute is not empty. Not to be confused with ::placeholder, which selects the placeholder text itself.
  • Presentation API: The Presentation API shows or controls content on another display, such as a network-connected TV or projector.
  • requestIdleCallback(): The requestIdleCallback() API queues a function that runs in idle browser time, either at the end of a frame or when the user is inactive. Also known as the background tasks API.
  • spellcheck: The spellcheck global HTML attribute sets whether the browser may check an element for spelling errors.
  • text-align-last: The text-align-last CSS property sets the alignment of the last line of text before a forced line break.
  • WEBGL_compressed_texture_astc WebGL extension: The WEBGL_compressed_texture_astc extension for WebGL 1.0 and 2.0 contexts adds the Adaptive Scalable Texture Compression format to compressedTexImage2D() and compressedTexSubImage2D().
  • WEBGL_debug_shaders WebGL extension: The WEBGL_debug_shaders extension for WebGL 1.0 and 2.0 contexts adds the getTranslatedShaderSource() method to debug shaders from privileged contexts.

New in Firefox

The following features are now available in Firefox:

  • Array includes(): The includes() method of arrays and typed arrays returns whether a given value appears in the array.
  • captureStream() for <canvas>: The captureStream() method for <canvas> elements returns a MediaStream which includes a CanvasCaptureMediaStreamTrack representing real-time video of the canvas image. You can use this to record the canvas, or send it elsewhere, such as another canvas or WebRTC connection.
  • Hyphenation: The hyphens CSS property controls when long words are broken by line wrapping. Although called hyphens, the property applies to word-splitting behavior across languages, such as customary spelling changes or the use of other characters. Support for non-English languages varies significantly.
  • Screen orientation: The screen.orientation API gets information about the orientation of the viewport, such as landscape or portrait. With this API, you can adapt an application's layout or behavior in response to changes in orientation.
  • writing-mode SVG 1.1 values: The lr, lr-tb, rl, rl-tb, tb, and tb-rl keyword values for the writing-mode CSS property set the text direction for elements in SVG 1.1 documents.

New in Firefox for Android

The following features are now available in Firefox for Android:

  • Array includes(): The includes() method of arrays and typed arrays returns whether a given value appears in the array.
  • captureStream() for <canvas>: The captureStream() method for <canvas> elements returns a MediaStream which includes a CanvasCaptureMediaStreamTrack representing real-time video of the canvas image. You can use this to record the canvas, or send it elsewhere, such as another canvas or WebRTC connection.
  • Hyphenation: The hyphens CSS property controls when long words are broken by line wrapping. Although called hyphens, the property applies to word-splitting behavior across languages, such as customary spelling changes or the use of other characters. Support for non-English languages varies significantly.
  • Screen orientation: The screen.orientation API gets information about the orientation of the viewport, such as landscape or portrait. With this API, you can adapt an application's layout or behavior in response to changes in orientation.
  • writing-mode SVG 1.1 values: The lr, lr-tb, rl, rl-tb, tb, and tb-rl keyword values for the writing-mode CSS property set the text direction for elements in SVG 1.1 documents.