Polymer.dart is a set of comprehensive UI and utility components for building web applications. With Polymer.dart's custom elements, templating, data binding, and other features, you can quickly build structured, encapsulated, client-side web apps.
Polymer.dart is a Dart port of Polymer created and maintained by the Dart team. The Dart team is collaborating with the Polymer team to ensure that polymer.dart elements and polyfills are fully compatible with Polymer.
Polymer.dart replaces Web UI, which has been deprecated.
The Polymer.dart homepage contains a list of features, project status, installation instructions, tips for upgrading from Web UI, and links to other documentation.
See our TodoMVC example by opening up the Dart Editor's Welcome Page and selecting "TodoMVC".
For more information about Dart, see http://www.dartlang.org/.
When you use this package, you automatically get the polymer_expressions package, which provides an expressive syntax for use with templates.
Add the polymer.dart package to your pubspec.yaml file:
dependencies: polymer: ">=0.9.0 <0.10.0"
Instead of using
any, we recommend using version ranges to avoid getting your
project broken on each release. Using a version range lets you upgrade your
package at your own pace. You can find the latest version number at
To build a deployable version of your app, add the polymer transformers to your pubspec.yaml file:
transformers: - polymer
pub build. The polymer transformers assume all files under
are possible entry points, this can be adjusted with arguments in your
pubspec.yaml file. For example, you can say only
web/index.html is an entry
point as follows:
transformers: - polymer: entry_points: web/index.html
Here is a list of arguments used by the polymer transformers:
* js: whether to load JS code directly. By default polymer converts your app's
html file to load the compiled JS code directly. Setting this parameter to
false will keep a dart script tag and the
dart.js script tag on the page.
csp: whether to load a Content Security Policy (CSP) compliant JS file. Dart2js generates two JS files, one that is not CSP compilant and one that is. By default, polymer uses the former becuase it's likely more efficient, but you can choose the latter by setting this flag.
entry_points: can be a list of entry points or, for convenience, a single entry point as shown above.
For example, this specification includes 2 entrypoints and chooses the CSP compliant JS file:
transformers: - polymer: entry_points: - web/index.html - web/index2.html csp: true
We also have the Web UI development list for discussions about internals of the code, code reviews, etc.
This file contains highlights of what changes on each version of the polymer package. We will also note important changes to the polyfill packages if they impact polymer: custom_element, html_import, observe, shadow_dom, and template_binding.
Add this to your package's pubspec.yaml file:
dependencies: polymer: ">=0.9.5 <0.10.0"
If you're using the Dart Editor, choose:
Menu > Tools > Pub Install
Or if you want to install from the command line, run:
$ pub install
Now in your Dart code, you can use:
|0.10.0-pre.1||Mar 07, 2014||Download polymer 0.10.0-pre.1 archive|
|0.10.0-pre.0||Feb 28, 2014||Download polymer 0.10.0-pre.0 archive|
|0.9.5||Jan 31, 2014||Download polymer 0.9.5 archive|
|0.9.4||Jan 10, 2014||Download polymer 0.9.4 archive|
|0.9.3+3||Dec 19, 2013||Download polymer 0.9.3+3 archive|
|0.9.3+2||Dec 18, 2013||Download polymer 0.9.3+2 archive|
|0.9.3+1||Dec 16, 2013||Download polymer 0.9.3+1 archive|
|0.9.3||Dec 13, 2013||Download polymer 0.9.3 archive|
|0.9.2+4||Dec 12, 2013||Download polymer 0.9.2+4 archive|
|0.9.2+3||Dec 12, 2013||Download polymer 0.9.2+3 archive|