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getComputedStyle

98.51

CSS3 DOM JS API

API to get the current computed CSS styles applied to an element. This may be the current value applied by an animation or as set by a stylesheet.

Further reading:

  1. Can I use page for: getComputedStyle
  2. MDN Web Docs - getComputedStyle
  3. Demo
  4. Polyfill for IE
  5. WebPlatform Docs