Update code samples to match release version (#4241)

As I learned from a support Thread on Discord, the tagName convention was dropped during the beta period. Instead you need to export the class and use it in astro file.
I updated the code samples on this page accordingly.
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StefanGussner 2022-08-10 21:08:12 +02:00 committed by GitHub
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@ -68,9 +68,9 @@ __`src/components/my-element.js`__
```js ```js
import { LitElement, html } from 'lit'; import { LitElement, html } from 'lit';
export const tagName = 'my-element'; const tagName = 'my-element';
class MyElement extends LitElement { export class MyElement extends LitElement {
render() { render() {
return html` <p>Hello world! From my-element</p> `; return html` <p>Hello world! From my-element</p> `;
} }
@ -87,10 +87,10 @@ __`src/pages/index.astro`__
```astro ```astro
--- ---
import '../components/my-element.js'; import {MyElement} from '../components/my-element.js';
--- ---
<my-element></my-element> <MyElement />
``` ```
> Note that Lit requires browser globals such as `HTMLElement` and `customElements` to be present. For this reason the Lit renderer shims the server with these globals so Lit can run. You *might* run into libraries that work incorrectly because of this. > Note that Lit requires browser globals such as `HTMLElement` and `customElements` to be present. For this reason the Lit renderer shims the server with these globals so Lit can run. You *might* run into libraries that work incorrectly because of this.
@ -103,10 +103,10 @@ Hydration is also handled automatically. You can use the same hydration directiv
```astro ```astro
--- ---
import '../components/my-element.js'; import {MyElement} from '../components/my-element.js';
--- ---
<my-element client:visible /> <MyElement client:visible />
``` ```
The above will only load the element's JavaScript when the user has scrolled it into view. Since it is server rendered they will not see any jank; it will load and hydrate transparently. The above will only load the element's JavaScript when the user has scrolled it into view. Since it is server rendered they will not see any jank; it will load and hydrate transparently.