Focus events, such as focus and blur, fire when an element gets or loses focus.

Learning resources on MDN

• Element: focus event
• Element: blur event
• Element: focusin event
• Element: focusout event

Browser support

• Chrome 1 Released on 2008-12-11
• Chrome Android 18 Released on 2012-06-27
• Edge 12 Released on 2015-07-29
• Firefox 24 Released on 2013-09-17
• Firefox for Android 24 Released on 2013-09-17
• Safari 3.1 Released on 2008-03-18
• Safari on iOS 2 Released on 2008-07-11

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