Card headers are used at the top of cards.

  • The headline text.

leading - Content placed before the headline

trailing - Content placed after the headline

Hierarchy

  • LitElement
    • ZetaCardHeader

Other

  • Returns ZetaCardHeader

headline?: string

The headline text. Can Also be slotted.

subHeadline?: string

The sub headline text.

rendering

  • Invoked on each update to perform rendering tasks. This method may return any value renderable by lit-html's ChildPart - typically a TemplateResult. Setting properties inside this method will not trigger the element to update.

    Returns TemplateResult<1>

styles

styles: CSSResult[] = ...

Array of styles to apply to the element. The styles should be defined using the css tag function, via constructible stylesheets, or imported from native CSS module scripts.

Note on Content Security Policy:

Element styles are implemented with <style> tags when the browser doesn't support adopted StyleSheets. To use such <style> tags with the style-src CSP directive, the style-src value must either include 'unsafe-inline' or nonce-<base64-value> with <base64-value> replaced be a server-generated nonce.

To provide a nonce to use on generated <style> elements, set window.litNonce to a server-generated nonce in your page's HTML, before loading application code:

<script>
// Generated and unique per request:
window.litNonce = 'a1b2c3d4';
</script>