function

fetch.preconnect

url: string | URL,

options?: { dns: boolean; http: boolean; https: boolean; tcp: boolean }

): void;

Preconnect to a URL. This can be used to improve performance by pre-resolving the DNS and establishing a TCP connection before the request is made.

This is a custom property that is not part of the Fetch API specification.

@param url

The URL to preconnect to

@param options

Options for the preconnect

Referenced types

The URL interface represents an object providing static methods used for creating object URLs.

hash: string
MDN Reference
host: string
MDN Reference
hostname: string
MDN Reference
href: string
MDN Reference
readonly origin: string
MDN Reference
password: string
MDN Reference
pathname: string
MDN Reference
port: string
MDN Reference
protocol: string
MDN Reference
search: string
MDN Reference
readonly searchParams: URLSearchParams
MDN Reference
username: string
MDN Reference
toJSON(): string;
MDN Reference
toString(): string;
The toString() method on the URL object returns the serialized URL. The value returned is equivalent to that of href and toJSON.
static canParse(
url: string | URL,
base?: string | URL
): boolean;
MDN Reference
static createObjectURL(
obj: Blob | MediaSource
): string;
MDN Reference
static parse(
url: string | URL,
base?: string | URL
): null | URL;
MDN Reference
static revokeObjectURL(
url: string
): void;
MDN Reference