зеркало из https://github.com/mozilla/gecko-dev.git
15 строки
348 B
HTML
15 строки
348 B
HTML
<!DOCTYPE html>
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<html>
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<body>
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<iframe id="iframe" src="1370968-inner.xhtml"></iframe>
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<script>
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var io = new IntersectionObserver(function () {
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}, { });
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var iframe = document.getElementById('iframe');
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iframe.onload = function () {
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io.observe(iframe.contentDocument.getElementById('target'));
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};
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</script>
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</body>
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</html>
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