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IntersectionObserver

- WD

API that can be used to understand the visibility and position of DOM elements relative to a containing element or to the top-level viewport. The position is delivered asynchronously and is useful for understanding the visibility of elements and implementing pre-loading and deferred loading of DOM content.

Chrome

  1. 4 - 50: Not supported
  2. 51 - 57: Partial support
  3. 58 - 64: Supported
  4. 65 - 107: Supported
  5. 108: Supported
  6. 109 - 111: Supported

Edge

  1. 12 - 14: Not supported
  2. 15: Partial support
  3. 16 - 18: Supported
  4. 79 - 106: Supported
  5. 107: Supported

Safari

  1. 3.1 - 12: Not supported
  2. 12.1 - 16.0: Supported
  3. 16.1: Supported
  4. 16.2 - TP: Supported

Firefox

  1. 2 - 51: Not supported
  2. 52 - 54: Disabled by default
  3. 55 - 106: Supported
  4. 107: Supported
  5. 108 - 109: Supported

Opera

  1. 9 - 37: Not supported
  2. 38 - 44: Partial support
  3. 45 - 63: Supported
  4. 64 - 91: Supported
  5. 92: Supported

IE

  1. 5.5 - 10: Not supported
  2. 11: Not supported

Chrome for Android

  1. 107: Supported

Safari on iOS

  1. 3.2 - 12.1: Not supported
  2. 12.2 - 16.0: Supported
  3. 16.1: Supported

Samsung Internet

  1. 4: Not supported
  2. 5 - 6.4: Partial support
  3. 7.2 - 18.0: Supported
  4. 19.0: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 72: Supported

UC Browser for Android

  1. 13.4: Supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 107: Supported

Firefox for Android

  1. 106: Supported

QQ Browser

  1. 13.1: Supported

Baidu Browser

  1. 13.18: Supported

KaiOS Browser

  1. 2.5: Not supported
Resources:
MDN Web Docs - Intersection Observer
Google Developers article
Polyfill
Sub-features:
IntersectionObserver V2