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WindowEventHandlers.onunload

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Sumário

O evento unload é disparado quando a janela está descarregando seus conteúdos e recursos. A remoção dos recursos é processada após o evento unload ocorrer.

Sintaxe

window.onunload = funcRef;
  • funcRef é a referência a uma função.

Notas

Using this event handler in your page prevents Firefox 1.5 from caching the page in the in-memory bfcache. See Using Firefox 1.5 caching for details.

Browsers equipped with pop-up window blockers will ignore all window.open() method calls in onunload event handler functions.

You can and should handle this event through window.addEventListener() and the unload event. More documentation is available there.

Especificações

Specification Status Comment
WHATWG HTML Living Standard
The definition of 'GlobalEventHandlers' in that specification.
Living Standard  
HTML5.1
The definition of 'GlobalEventHandlers' in that specification.
Working Draft  
HTML5
The definition of 'GlobalEventHandlers' in that specification.
Recommendation  

Compatibilidade de navegadores

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support (Yes) (Yes) (Yes) (Yes) (Yes)
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support (Yes) (Yes) (Yes) (Yes) (Yes)

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