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Blog Lightning-fast templates & Web Components: lit-html & LitElement 2019-02-05 Today we're excited to announce the first stable releases of our two next-generation web development libraries: lit-html and LitElement. lit-html is a tiny, fast, expressive library for HTML templating. LitElement is a simple base class for creating Web Components with lit-html templates. If you've been following the
Blog Polymer 3.0 preview: Paths and names We're changing the way we import modules in Polymer 3.x 2018-02-26 Updated March 23, 2018. An earlier version of this post listed the wrong release versions. 3.0.0-pre.11 is the last version before the changes described here. 3.0.0-pre.12 is the first version with the new changes. These numbers have been corrected in the post. For hands-on information abou
Blog Polymer 3.0: New year, new preview New Polymer 3.0 preview: Bug fixes and new features 2018-01-18 Happy New Year from the Polymer team! Hope everyone had a nice break. We've all returned from our various travels and are getting ready to roll out some more web component goodness. This week, we released a new preview of Polymer 3.0. Here's what we'll cover today: What is Polymer 3.0? What's the
Blog Polymer 3.0 preview: npm and ES6 Modules Today at the 2017 Polymer Summit in Copenhagen, we announced one of the biggest changes to our developer workflow in the project's history. 2017-08-22 Today at the 2017 Polymer Summit in Copenhagen, we announced one of the biggest changes to our developer workflow in the project's history. Actually, it's two changes: Polymer is moving from Bower to npm
Blog It's time for 2.0! The Polymer 2.0 library is built for performant interoperable web component development. 2017-05-15 Polymer 2.0 has landed. Our freshest cut of the Polymer CLI is ready for download, our Docs include all the latest 2.0 guidance and upgrade tips, and our Elements have been ported to Hybrid mode to be used in both 1.0- and 2.0-based applications. We've also made sure to bring
Blog Welcome 2.0 Release Candidate! The Polymer 2.0 Release Candidate is available and ready for use. 2017-03-08 We're pleased to announce that we've cut a release candidate of Polymer 2.0! This release candidate is feature complete, and incorporates pre-release feedback from the community. We've fixed the major issues reported during the preview period and tested it across all supported browsers
Blog Polymer 2.0 Preview Check out the preview branch of the forthcoming Polymer 2.0 release. 2016-09-09 Today we pushed a 2.0-preview branch to the Polymer repository, where we’re working on the next major version of the library. Polymer 2.0 is a minimally-breaking change from the current library, with a few very precise goals: Take advantage of native v1 Shadow DOM and v1 Custom Elements API’s T
Blog What is shady DOM? Why do we need a new kind of DOM? 2015-05-28 Table of ContentsWhy a new kind of DOM?DOM PollutionTree ScopingShadow DOM EncapsulationShadow DOM is awesome, why is there a shady DOM?Shady DOM is BornSummary Why a new kind of DOM? Encapsulation is at the core of web components. Web components aim to provide the user a simple element interface that is rendered with complexity
The latest goings-on with the Polymer project and in the community. We'll update this page to announce major releases and showcase cool stuff being built with Polymer. Have an idea for an article? Suggest it!
Basics Table of contents Installing Polymer Installing components Installing with Bower Installing from ZIP files Using git Next steps Installing Polymer If you want to learn Polymer, the easiest way to get started is to download the starter project: The starter project includes Polymer, a set of elements, and a starter app. Work through the tutorial for an introduction to Polymer APIs and concep
Thanks for checking us out! Polymer is still in developer preview. Don’t see an answer to your question on here? Ask on the mailing list! Table of contents Polymer Why should I care about this project? Is Polymer production ready? How is Polymer related to material design? Do I have to use Polymer Designer? I don’t like your {components | data binding syntax | face }! Which browsers does Polymer
Dialogs, snackbars, and toasts Dialogs, snackbars and toasts all appear as a separate sheet, overlaying the background. The paper element collection includes two elements. A dialog (<paper-dialog>) is a modal window that can include a title, text, action buttons, and other controls. A snackbar or toast (<paper-toast>) is a small, transient popup that includes a message and optionally a single acti
'," ",""].join("\n"),d=[],e=function(){var a=b.document,c=a.querySelector("#crumbs");c.textContent="";for(var e,g=0;e=d[g];g++){var h=a.createElement("a");h.href="#",h.textContent=e.localName,h.idx=g,h.onclick=function(a){for(var b;d.length>this.idx;)b=d.pop();f(b.shadow||b,b),a.preventDefault()},c.appendChild(a.createElement("li")).appendChild(h)}},f=function(a,c){var f=b.document;k=[];var g=c||a
Improving the accessibility of Web Components Updated since v0.2.2 By Addy Osmani and Alice Boxhall Published April 02, 2014 Table of contents Introduction Is your element accessible? Summary (tl;dr) Can your element be used with the keyboard alone? Can you use your element with a screen reader? Can users understand everything without relying on color? Is there sufficient contrast between the te
The Polymer library is in maintenance mode. For new development, we recommend Lit. You're viewing an older version of the Polymer library documentation. Please see Polymer 3.0 for the latest. Polymer CLI is the recommended starting point for building Polymer applications. If for some reason it does not meet your needs, you can use the underlying libraries that power its build toolchain. See Advanc
Written for v0.0.20130808 By Eric Bidelman Published July 11, 2013 (updated November 02, 2013) Content Default styles User-provided styles Element-defined styles Preventing FOUC “Polyfilling” :unresolved Inheriting / resetting outside styles Styling the internal markup Defining style hooks Styling distributed nodes Polymer’s @polyfill-* directives Conclusion This article covers many of the new
Polymer core elements Polymer's core elements are a set of visual and non-visual utility elements. They include elements for working with layout, user input, selection, and scaffolding apps. Paper elements Polymer's paper elements collection implements material design for the web. They're a set of highly visual, highly interactive elements that include things like controls, layouts, hero transitio
Just a heads up... Polymer is still in early days and only supports modern browsers. We haven’t really tested Sandbox on your browser yet, and some (or all) things may not work! I'm Feeling Brave!
Getting Started Introduction Get the code Getting started Runtime configuration Core runtime polymer.js Platform technologies HTML Imports Custom Elements Shadow DOM MDV Web Animations Pointer Events More information FAQ Tools & Testing Browser Compatibility Changelog The Polymer core provides a thin layer of code that expresses its opinion and provides the extra sugaring that all Polymer elements
The Polymer library is in maintenance mode. For new development, we recommend Lit. The Polymer library provides a set of features for creating custom elements. These features are designed to make it easier and faster to make custom elements that work like standard DOM elements. Similar to standard DOM elements, Polymer elements can be: Instantiated using a constructor or document.createElement. Co
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