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Module

std/http/negotiation.ts>accepts

Deno standard library
denoland/deno_std
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The Standard Library has been moved to JSR. See the blog post for details.
function accepts
import { accepts } from "https://deno.land/std@0.174.0/http/negotiation.ts";

Returns an array of media types accepted by the request, in order of preference. If there are no media types supplied in the request, then any media type selector will be returned.

Examples

Example 1

import { accepts } from "https://deno.land/std@0.174.0/http/negotiation.ts";

const req = new Request("https://example.com/", {
  headers: {
    "accept":
      "text/html, application/xhtml+xml, application/xml;q=0.9, image/webp, *\/*;q=0.8",
  },
});

console.log(accepts(req));
// [
//   "text/html",
//   "application/xhtml+xml",
//   "image/webp",
//   "application/xml",
//   "*\/*",
// ]

Returns

string[]

For a given set of media types, return the best match accepted in the request. If no media type matches, then the function returns undefined.

Examples

Example 1

import { accepts } from "https://deno.land/std@0.174.0/http/negotiation.ts";

const req = new Request("https://example.com/", {
  headers: {
    "accept":
      "text/html, application/xhtml+xml, application/xml;q=0.9, image/webp, *\/*;q=0.8",
  },
});

accepts(req, "text/html", "image/webp"); // "text/html";

Parameters

request: Request
...types: string[]

Returns

string | undefined