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WindowSharedStorage
Deprecated
Avoid using this feature in new projects.
This feature may be a candidate for removal from web standards or browsers.
The WindowSharedStorage interface of the Shared Storage API represents the shared storage for a particular origin within a standard browsing context.
WindowSharedStorage is accessed via Window.sharedStorage.
worklet Read only -
Contains the SharedStorageWorklet instance representing the shared storage worklet for the current origin. SharedStorageWorklet includes the addModule() method, which is used to add a module to the shared storage worklet.
js
// Randomly assigns a user to a group 0 or 1
function getExperimentGroup() {
return Math.round(Math.random());
}
async function injectContent() {
// Add the module to the shared storage worklet
await window.sharedStorage.worklet.addModule("ab-testing-worklet.js");
// Assign user to a random group (0 or 1) and store it in shared storage
window.sharedStorage.set("ab-testing-group", getExperimentGroup(), {
ignoreIfPresent: true,
});
// Run the URL selection operation
const fencedFrameConfig = await window.sharedStorage.selectURL(
"ab-testing",
[
{ url: `https://your-server.example/content/default-content.html` },
{ url: `https://your-server.example/content/experiment-content-a.html` },
],
{
resolveToConfig: true,
},
);
// Render the chosen URL into a fenced frame
document.getElementById("content-slot").config = fencedFrameConfig;
}
injectContent();
See the Shared Storage API landing page for a walkthrough of this example and links to other examples.
This feature does not appear to be defined in any specification.