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These languages also run client-side in the user’s browser, making them self-contained and easy to support. #Stack overflow java webscraper code#Our initial release supports HTML, CSS, and JavaScript because questions on these topics use external code hosting sites the most frequently. If you see code that is intended to be harmful (such as an attempt at phishing), you should flag it for moderator attention. If you see bad code that you think should be disabled, downvote the post. Because users can still write code that creates annoying behaviors like infinite loops or pop-ups, we disable snippets on any post that is heavily downvoted (scoring less than -3 on Stack Overflow, -8 on Meta). Like all other aspects of our site, Stack Snippets are ultimately governed by the community. We render the Snippets on an external domain ( ) in order to ensure that the same-origin policy is not in effect and to keep the snippets from accessing your logged-in session or cookies.We use HTML5 sandboxed iframes in order to prevent many forms of malicious attack.We isolate snippets from our sites to block access to your private Stack Exchange data: With that said, the snippets are running client code in your browser, and you should always exercise caution when running code contributed by another user. You are not in any more danger than you are when browsing any site with JavaScript enabled. Yes, as much as the web in general is safe. You can even edit the code right from the Markdown editor and the snippet will still be runnable. The runnable snippets behavior is triggered by a few new HTML comments that are not rendered by Markdown. This makes them instantly backwards-compatible with our normal revision history and diffs, and also any API clients including our own mobile apps. Under the HoodĪ great feature of Stack Snippets is that they are inserted as regular Markdown code blocks: When answering a post containing a snippet, you can easily include a modified version of the original in your answer – just click the “Copy snippet to answer” button. Once you’ve got your code working, press “Insert into Post” at the bottom and you’re done! You can test your snippet, or load it back into the Snippets editor from right in the Preview screen: ![]() The editor appears and allows you to enter HTML, CSS, and JavaScript (or any combination of them): In the Markdown editor window, there’s a new button that you can click to launch the Stack Snippets editor. Stack Snippets work for both questions and answers. The code will not run until you press the “Run code snippet ” button: As of today, we’re launching “Stack Snippets,” a fully integrated feature available on Stack Overflow and any other code-related Stack Exchange sites. So we’ve created our own way to embed runnable JavaScript, CSS, and HTML code blocks right in the body of a post. ![]() This is an unnecessary burden for both askers and answerers. The community voiced similar concerns around external sites, which eventually led us to block posts that contain links to JSFiddle and similar sites without a corresponding code block.
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