[johnisgood]

Incorrect. You can target web browsers with it.

> Dart’s flexibility in compilation and execution doesn’t stop there. For example, Dart can be compiled into JavaScript so it can be executed by browsers. This allows code reuse between mobile apps and web apps. Developers have reported as high as 70% code reuse between their mobile and web apps. Dart can also be used on a server either by being compiled to native code, or by compiling to JavaScript and using it with node.js.

Source: https://hackernoon.com/why-flutter-uses-dart-dd635a054ebf

[dragonwriter]

Dart can target web but Flutter doesn't yet have support for browsers.