Request.priority

A string indicating the hinted priority of the request. Possible values are:

high

The request is at a high priority relative to the other requests of a similar type.

low

The request is at a low priority relative to other requests of a similar type.

auto

Default mode, which indicates no preference for the fetch priority. The browser decides what is best for the user.

In the following snippet, we create a new request using the Request() constructor (for an API endpoint) at a low priority, then save the priority of the request in a variable:

var myRequest = new Request('/background-api-call', {priority: 'low'});
var myPriority = myRequest.priority; // "low"

• ServiceWorker API
• HTTP access control (CORS)
• HTTP