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Request.priority

The priority read-only property of the Request interface contains the hinted priority of the request relative to other requests.

Value

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

  • high: Fetch the request at a high priority relative to other requests of a similar type.
  • low: Fetch the request 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.

Examples

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"

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
priority
101
101
No
No
No
No
101
101
No
No
No
No

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/Request/priority