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Ilya Kantor 2019-07-28 15:42:37 +03:00
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1-js/01-getting-started/1-intro/article.md
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@ -75,7 +75,7 @@ Examples of such restrictions include:
This limitation is, again, for the user's safety. A page from `http://anysite.com` which a user has opened must not be able to access another browser tab with the URL `http://gmail.com` and steal information from there.
- JavaScript can easily communicate over the net to the server where the current page came from. But its ability to receive data from other sites/domains is crippled. Though possible, it requires explicit agreement (expressed in HTTP headers) from the remote side. Once again, that's a safety limitation.
![](limitations.png)
![](limitations.svg)
Such limits do not exist if JavaScript is used outside of the browser, for example on a server. Modern browsers also allow plugin/extensions which may ask for extended permissions.