Fetch
The Fetch API provides an interface for asynchronously fetching resources via HTTP requests inside of a Worker.
The fetch method is implemented on the ServiceWorkerGlobalScope. See MDN documentation for more information.
Constructor
addEventListener("fetch", event => { // NOTE: can’t use fetch here, as we’re not in an async scope yet event.respondWith(eventHandler(event))})
async function eventHandler(event) { // fetch can be awaited here since `event.respondWith()` waits for the Promise it receives to settle const resp = await fetch(event.request) return resp}fetch()Promise<Response>- Fetch returns a promise to a Response.
Properties
requestRequest|string- The
Requestobject or a string represents the URL to fetch.
- The
initRequestInit- The content of the request.