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13 lines
468 B
HTML
13 lines
468 B
HTML
<!DOCTYPE html>
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<script>
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self.addEventListener('message', function(e) {
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// Send paint-timing entries upon receiving a message.
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const paintEntries = performance.getEntriesByType('paint');
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let entryContents = paintEntries.length + '';
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for (let i = 0; i < paintEntries.length; i++) {
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const entry = paintEntries[i];
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entryContents += ' ' + entry.entryType + ' ' + entry.name;
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}
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parent.postMessage(entryContents, '*');
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});
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</script>
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