Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The getNestedConfigs() method of the Fence interface returns the FencedFrameConfigs loaded into <fencedframe>s embedded inside the current <fencedframe>.
getNestedConfigs()None.
getNestedConfigs() has two possible return values:
FencedFrameConfig objects, if the current <fencedframe>'s config was created using an API that supports nested configs (for example Protected Audience). Of these 20 configs, the first N configs are those registered through the API and the rest are padding configs that will navigate to about:blank, so that the number of configs is hidden and cannot leak any information.null if the current <fencedframe>'s config was created using an API that does not support nested configs (for example Shared Storage).// Run inside a <fencedframe>
// Retrieve the configs of embedded fenced frames
const configs = window.fence.getNestedConfigs();
// Set a new fenced frame's config to equal one of the retrieved configs
const frame = document.createElement("fencedframe");
frame.config = configs[0];