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要素の表示状態が変化したときに投げられるイベント. GDD11jpで聞きながら書いたコードなので動くかどうかは分からないがメモしておく.

JavaScript

Last updated at 2012-12-26Posted at 2012-03-16

document.addEventListener('visibilityChange', function(e) {
     console.log("hidden: " + document.hidden, "starge: " + document.visibilityState);
     // visibilityState: 
}, false);

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