Headers

Baseline

20173

Headers API HTTP

Headers Request.headers Response.headers Headers Headers()

: HTTP

Headers 0 append()

Headers entries() for...of for (const p of myHeaders) for (const p of myHeaders.entries())

Headers set()delete()append() Headers

Headers()
Request
- mode no-cors CORS
Response
- Response.error() Response.redirect() fetch()
- Response() Response.json()

Headers HTTP TypeError TypeError

Headers(): Headers

Headers.append(): Headers
Headers.delete(): Headers
Headers.entries(): /
Headers.forEach(): Headers /
Headers.get(): Headers
Headers.getSetCookie(): Set-Cookie
Headers.has(): Headers
Headers.keys(): /
Headers.set()
Headers.values(): /

: Headers.set() Headers.append() Headers.set() Headers.append()

Headers() append() get()

const myHeaders = new Headers();

myHeaders.append("Content-Type", "text/xml");
myHeaders.get("Content-Type"); // 'text/xml'

let myHeaders = new Headers({
  "Content-Type": "text/xml",
});

// 
myHeaders = new Headers([["Content-Type", "text/xml"]]);

myHeaders.get("Content-Type"); // 'text/xml'


Fetch # headers-class

MDN

MDN 202637

GitHub