lit-element

问题 I am newbie to lit-element, and when use import to include the library, I am getting error as: Uncaught TypeError: Failed to resolve module specifier "lit-element". Relative references must start with either "/", "./", or "../". Please provide any alternatives/solutions. import { LitElement, html } from 'lit-element'; class MyElement extends LitElement { render(){ return html` <div> <p>A paragraph</p> </div> `; } } customElements.define('my-element', MyElement); 回答1: This doesn't work because

问题 I am newbie to lit-element, and when use import to include the library, I am getting error as: Uncaught TypeError: Failed to resolve module specifier "lit-element". Relative references must start with either "/", "./", or "../". Please provide any alternatives/solutions. import { LitElement, html } from 'lit-element'; class MyElement extends LitElement { render(){ return html` <div> <p>A paragraph</p> </div> `; } } customElements.define('my-element', MyElement); 回答1: This doesn't work because

问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 months ago . Improve this question I have learned and worked with "Lit-element" with some projects. But I have no experiences with working "React" before. Looking into React code it seems more similar to "Lit-Element". It is very helpful if someone can explain the main differences between the

问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 months ago . Improve this question I have learned and worked with "Lit-element" with some projects. But I have no experiences with working "React" before. Looking into React code it seems more similar to "Lit-Element". It is very helpful if someone can explain the main differences between the

问题 I am trying to create a blank project, like a template, using lit-html. I wanted to also add some testing capabilities, so i have been trying to get it to work with Karma. I can run a normal test, like an addition, without any errors, so i think Karma itself is running ok. but i can't run any test involving the webcomponent. I can't import the webcomponent! i am exporting the webcomponent with: export default class MyComponent ... and then on the test file i am importing it with: import

问题 I have create a web component for displaying gists generally in any html content. I used the Lit Element Typescript Starter Project as a baseline and it comes with a rollup.config.js file. I changed the output format to iife and left the rest the same, with exception of the component and bundle names. The reason I did this is that I wanted the bundle to be easily accessible via script tags, and rollup says that the iife format does this. This is the modified rollup.config.js file. // ========

问题 I started a project based on LitElement There are many components nested in each other, Let us say we have this structure: the root component is my-app import { LitElement, html, customElement, query } from 'lit-element'; import './my-form'; import './my-view'; import { MyView } from './my-view'; @customElement('my-app') export class MyApp extends LitElement { @query('my-view') private myView?: MyView; private handleCountChange(e: CustomEvent<{ count: number }>) { if (!this.myView) throw 'my

问题 I have this datalist inside a Lit-Element web component: <input list="cars" name="car" placeholder = "Type car name"> <datalist id="cars"> <option value="Jeep"> <option value="Lamborghini"> <option value="Ferrari"> <option value="Fiat 500"> <option value="Gran Torino"> </datalist> If I select one of these options from the list, and then I click again on input field, I can't see the list of option but only the selected one. If I want to see all the options I have to manually delete with the

来源： https://stackoverflow.com/questions/55962214/litelement-not-updating-checkbox-in-list

问题 Anyone that has a good setup for testing custom elements with jest with jsdom or similar? I have been using Puppeteer ans Selenium, but they slows down the test runs too much. Any other alternatives to or fixes for jsdom that makes the below test runnable? import {LitElement} from 'lit-element'; import {html} from 'lit-html'; export class Counter extends LitElement { static get properties() { return Object.assign({}, super.properties, { count: {type: Number} }); } render() { return html`Count