demo · v136

canLoadOpaqueURL removed

The 2023 deprecation finally lands. HTMLFencedFrameElement.canLoadOpaqueURL() is gone — sites must use navigator.canLoadAdAuctionFencedFrame() instead. Probe both APIs in your browser below.

Probing…

API removal & replacement

HTMLFencedFrameElement defined?—
.canLoadOpaqueURL on prototype?—
navigator.canLoadAdAuctionFencedFrame?—

working replacement call

return value—
error—

the code

// Pre-136 (now removed)
HTMLFencedFrameElement.canLoadOpaqueURL();    // ❌

// 136+ replacement
const ok = await navigator.canLoadAdAuctionFencedFrame();
if (ok) {
  const frame = document.createElement("fencedframe");
  // ... set config & insert into DOM
}

see also