• Filters:
• Newly available
• Widely available
• Limited availability
• One missing engine
• Discouraged
• All features

• Features only in:
• Chromium
• Firefox
• Safari

• Browser releases:
• Chrome 141
• Chrome Android 141
• Edge 141
• Firefox 144
• Firefox for Android 144
• Safari 26
• Safari on iOS 26

New features in Firefox 144 (released on 2025-10-14)

• Map getOrInsert()

  Limited availability

  The getOrInsert() and getOrInsertComputed() methods of Map objects get a value, setting and getting a default value if needed.

  Learn more

  • Chrome ❌
  • Chrome Android ❌
  • Edge ❌
  • Firefox 144 Released on 2025-10-14
  • Firefox for Android 144 Released on 2025-10-14
  • Safari ❌
  • Safari on iOS ❌

• Invoker commands

  Limited availability

  The command and commandfor attributes for the <button> HTML element dispatch an action to an element when the button is invoked (by click or keystroke), as a declarative alternative to addEventListener() calls or onclick attribute handlers.

  Baseline availability blocked since October 2025 by Safari (0 months)

  Learn more

  • Chrome 135 Released on 2025-04-01
  • Chrome Android 135 Released on 2025-04-01
  • Edge 135 Released on 2025-04-04
  • Firefox 144 Released on 2025-10-14
  • Firefox for Android 144 Released on 2025-10-14
  • Safari ❌ Vendor position : support
  • Safari on iOS ❌ Vendor position : support

• Screen orientation lock

  Limited availability

  The screen.orientation.lock() method prevents changes to the screen orientation, typically in fullscreen applications such as games. For example, while locked, rotating a phone to the side won't change the screen orientation from landscape to portrait.

  Learn more

  • Chrome ❌
  • Chrome Android 38 Released on 2014-10-08
  • Edge ❌
  • Firefox 144 Released on 2025-10-14
  • Firefox for Android 144 Released on 2025-10-14
  • Safari ❌
  • Safari on iOS ❌

• view-transition-class

  Baseline Newly Available (since 2025-10-14)

  The view-transition-class CSS property sets a name that can be used to apply styles to multiple named view transition pseudo-elements.

  Learn more

  • Chrome 125 Released on 2024-05-14
  • Chrome Android 125 Released on 2024-05-14
  • Edge 125 Released on 2024-05-17
  • Firefox 144 Released on 2025-10-14
  • Firefox for Android 144 Released on 2025-10-14
  • Safari 18.2 Released on 2024-12-11
  • Safari on iOS 18.2 Released on 2024-12-11

• View transitions

  Baseline Newly Available (since 2025-10-14)

  View transitions allow you to create animated visual transitions between different states of a document.

  Learn more

  • Chrome 111 Released on 2023-03-07
  • Chrome Android 111 Released on 2023-03-07
  • Edge 111 Released on 2023-03-13
  • Firefox 144 Released on 2025-10-14
  • Firefox for Android 144 Released on 2025-10-14
  • Safari 18 Released on 2024-09-16
  • Safari on iOS 18 Released on 2024-09-16