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Fixed typo in article.md

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Fixed small typo in 'Page: DOMContentLoaded, load, beforeunload, unload' article.md
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Daria Pimenova 2019-12-30 10:01:24 +04:00 • committed by GitHub
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2-ui/5-loading/01-onload-ondomcontentloaded/article.md
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@ -173,7 +173,7 @@ window.onbeforeunload = function() {
};
```
For historical reasons, returning a non-empty string also counts as canceling the event. Some time ago browsers used show it as a message, but as the [modern specification](https://html.spec.whatwg.org/#unloading-documents) says, they shouldn't.
For historical reasons, returning a non-empty string also counts as canceling the event. Some time ago browsers used to show it as a message, but as the [modern specification](https://html.spec.whatwg.org/#unloading-documents) says, they shouldn't.
Here's an example: