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Questions tagged [polymer-3.x]

294 questions
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Polymer3.x audio is cached

I am building a polymer3 app using polymer-3-starter-kit from cli. It fetches songs from public api based on selected playlist. Getting following issues: The first song is disabled audio seems to be cached and does not change on route change. For…
Raj
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Polymer Data Bindings: Curly vs Square brackets

Reading through the Polymer 3.0 documentation, I noticed that both curly {{}} and square [[]] brackets are used. If any, what is the difference between these two methods of data-binding?
James Jensen
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Is Polymer 3 & Cordova Compatible?

I cant seem to get even the simple polymer starter kit running with Cordova, If i go back to polymer 2 it works fine, but polymer 3 wont load the my-app page. I've tried allot of ideas to no avail, Ive added each of the default builds without…
Bill
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How to put a / in vaadin-date-picker

I am using a vaadin-date-picker with polymer. I would like to put the right slash by default when the user types in a date in US format. So if the user types 01152019, it should auto format the date to 01/15/2019. Right now if I enter date without…
Varun Mehta
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Polymer paper-input - enable ios tab arrows

Noticed an issue when using a form like that:
Artur Takoev
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Meteor + LitElement (Polymer 3) issue with importing

I had an issue with importing the LitElement module into a Meteor project: I'm starting a new test project with Meteor 1.7+ and am using LitElement for a few components. I installed Meteor like so: meteor create meteor-lithtml --release…
Aaron
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Use Redux-router with polymer 3 app

The polymer app is using redux to store app's state. The idea is to store all of the routing in state too (see the image below). I want to use redux-router for this, but I started to face problems already at the start when I try to import the…
Artur Takoev
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Fade-in transistion in polymer 3 when ready

I want a div element to be faded in when a view in polymer 3 is loaded. I try to solve this by adding a css class with opacity: 0 to the div. When the polymer template is ready, the css class should be removed and the css transition should start (to…
pernpas
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shady-render.ts:46 Uncaught TypeError: result.getTemplateElement is not a function

When I try executing Polymer element locally,I am using polymer 3 and my HTML structure is HTML5. The counter-comp tag is added in my html file. import {LitElement} from "@polymer/lit-element/lit-element.js" class CounterComp extends…
Roopesh Manchanbele
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How can we install mwc-menu

Some of the new material components released with Polymer 3.0, are not available from NPM. Is there any way to install them ? For example, how can we install mwc-menu ?
Omar BELKHODJA
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Infinite scrolling Polymer 3 and Fetch API

Well firstly, tell me am I going down the right rabbit hole? I am building a new PWA which will firstly be designed for Mobile, I have built my back-end API and I am working on my front end. I am using Polymer 3 with a Vaadin-Grid at the…
Ross Summerell
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polymer 3: code not work after polymer build

my polymer.json { "entrypoint": "index.html", "shell": "src/boo-blogger/boo-blogger.js", "sources": [ "images/*", "fonts/*" ], "extraDependencies": [ "manifest.json", "node_modules/@webcomponents/webcomponentsjs/*.js", …
user9971007
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How do I observe property changes in Polymer 3?

How do I implement continuous checking (time based) of a property-change in a component using an event listener in Polymer 3? These are my component's properties: static get properties() { return { longitude: { type: Number }, …
Saksham Sondhi
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How to include custom polymer element inside another

How to include custom polymer 3 element inside another? Let's say I have two components: 1) Parent-component 2) Child-component I would like to include and use child component inside parent component. The question is: where should I put my child…
Piotr Treska
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Passing data returned from function to polymer custom element

I'm starting with Polymer 3 and I'm facing an issue I cannot solv. I have a custom element which will show a play card; its only property is an object with its suit and number. The element is more or less like this: import {html, PolymerElement}…
Dhouard
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