Remove edits of user 174.4.248.221. Incorrect, unsourced and opinionated. (And copy paste section he/she inserted in the Angular & React Wiki Articles)
On September 26, 2017, React 16.0.0 has been released with the MIT license.<ref>{{cite web |url=https://reactjs.org/blog/2017/09/26/react-v16.0.html#mit-licensed|title= React v16.0§MIT licensed |last=Clark |first=Andrew |date=September 26, 2017 |website=React Blog}}</ref> The MIT license change has also been backported to the 15.x release line with React 15.6.2.<ref>{{cite web |url=https://reactjs.org/blog/2017/09/25/react-v15.6.2.html |title=React v15.6.2 |last=Hunzaker |first=Nathan |date=September 25, 2017 |website=React Blog}}</ref>
==Criticism==
'''W3C standards compliance.''' React uses non-standard HTML tags and attributes (expandos), as well JavaScript language extensions (jsx), which require learning a vendor specific idiom and also is thwarting security.<ref>{{Cite web|title = Security-Goals-&-Threat-Model|url = https://github.com/cure53/DOMPurify/wiki/Security-Goals-&-Threat-Model|website = github|accessdate = 2017-11-15}}</ref>
'''Documentation and support.''' Poor documentation and lack of dedicated support from the creators, leading to tens of thousands of questions on stackoverflow (one third of them unanswered!).<ref>{{Cite web|title = Reactjs Unanswered Questions|url = https://stackoverflow.com/unanswered/tagged/reactjs|website = stackoverflow|accessdate = 2017-11-15}}</ref>
'''[[Separation of concerns]].''' React code mixes HTML with JavaScript, which is considered a bad practice, as it makes more difficult to read and maintain the code, also hard to implement static code analysis.
'''Code verbosity.''' In order to perform model-view changes with component states and immutable objects, React require additional lines of code for a task achievable with a single statement in plain javascript. <ref>{{Cite web|title = React-Redux Verbosity|url = https://games.greggman.com/game/react-and-redux-are-a-joke-right/|website = games.greggman|accessdate = 2017-11-15}}</ref><ref>{{Cite web|title = Why is Verbosity Bad|url = https://softwareengineering.stackexchange.com/questions/141175/why-is-verbosity-bad-for-a-programming-language|website = softwareengineering.stackexchange|accessdate = 2017-11-16}}</ref>
'''[[Single source of truth]].''' Due to a mythical slowness of the browser's DOM engine compared with processing a similar (but lighter) tree on JavaScript, React creates, updates and diffs own virtual DOMs (second source of truth for the User Interface), wasting CPU cycles (even when processing separately from the UI thread), arguably the most fundamental flaw. {{Citation needed|date=November 2017}}
