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Will Google's Dart Language Replace Javascript? (Video)
Seth Ladd, Google Web engineer and Chrome Developer Advocate, is today's interviewee. He's talking about Dart, which Wikipedia says is 'an open-source Web programming language developed by Google.' The Wikipedia article goes on to say Dart was unveiled at the GOTO conference in Aarhus, October 10–12, 2011, and that the goal of Dart is 'ultimately to replace JavaScript as the lingua franca of web development on the open web platform.' A bold aim, indeed. Last month (June, 2014), InfoWorld ran an article by Paul Krill headlined, Google's Go language on the rise, but Dart is stalling. Seth Ladd, unlike Paul Krill, is obviously rah-rah about Dart -- which is as it should be, since that's his job -- and seems to think it has a growing community and a strong place in the future of Web programming. For more about Dart, scroll down to watch Tim Lord's video interview with Seth -- or read the transcript, if you prefer. (Alternate Video Link)
Unless they can magically add Dart capabilities to all the web-capable devices already out there as well as current and future competitors devices, the answer is no.
There is already a source-to-source compiler. So you can write in Dart, and then convert your Dart program to Javascript. Then your server can deliver either Dart or JS depending on the client browser's capability.
Dart would need to be submitted to an independent standards body and be royalty and patent free
standard: http://developers.slashdot.org/story/13/12/14/2047248/googles-dart-becomes-ecmas-dart
royalties: http://www.ecma-international.org/memento/TC52.htm
license: http://opensource.org/licenses/BSD-3-Clause
STFU already