Insert code from Algo deposit:
function understands_video() {
return !!document.createElement('video').canPlayType; // boolean
}
if ( !understands_video() ) {
// Must be older browser or IE.
// Maybe do something like hide custom
// HTML5 controls. Or whatever...
videoControls.style.display = 'none';
}
Тестирование 134 задачи
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