What is NoScript used for?
The noscript element represents nothing if scripting is enabled, and represents its children if scripting is disabled. It is used to present different markup to user agents that support scripting and those that don't support scripting, by affecting how the document is parsed.
Does NoScript block JavaScript?
This browser extension allows JavaScript and other potentially harmful content to be executed only by trusted web sites of your choice (e.g. your online bank). NoScript also provides the most powerful anti-XSS protection ever available in a browser.
Is NoScript Security Suite safe?
It is considered a trusted open source tool, and regarded as an integral part of a larger suite of browser extensions for additional security. Along with HTTPS Everywhere, NoScript is embedded in Tor Browser by default.