| <!doctype html> |
| <link rel=help href="https://bugzilla.mozilla.org/show_bug.cgi?id=1741491"> |
| <script> |
| class CustomElement0 extends HTMLElement { |
| constructor () { |
| super() |
| } |
| |
| static get observedAttributes () { return ["style"] } |
| |
| async attributeChangedCallback () { |
| const animation = this.animate([{ |
| "boxShadow": "none", |
| "visibility": "collapse" |
| }], 1957) |
| animation.commitStyles() |
| } |
| } |
| |
| customElements.define("custom-element-0", CustomElement0) |
| window.addEventListener("load", () => { |
| const custom = document.createElement("custom-element-0") |
| document.documentElement.appendChild(custom) |
| custom.style.fontFamily = "family_name_0" |
| }) |
| </script> |
