Polyfill for Headers, as specified in the Fetch Spec.

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Deprecated: see https://angular.io/guide/http

class Headers {
  static fromResponseHeaderString(headersString: string): Headers
  constructor(headers?: Headers | {...})
  append(name: string, value: string): void
  delete(name: string): void
  forEach(fn: (values: string[], name: string | undefined, headers: Map<string, string[]>) => void): void
  get(name: string): string | null
  has(name: string): boolean
  keys(): string[]
  set(name: string, value: string | string[]): void
  values(): string[][]
  toJSON(): {...}
  getAll(name: string): string[] | null
  entries()
}

Description

The only known difference between this Headers implementation and the spec is the lack of an entries method.

Static methods

Constructor

Methods

Usage notes

Example

import {Headers} from '@angular/http';

var firstHeaders = new Headers();
firstHeaders.append('Content-Type', 'image/jpeg');
console.log(firstHeaders.get('Content-Type')) //'image/jpeg'

// Create headers from Plain Old JavaScript Object
var secondHeaders = new Headers({
  'X-My-Custom-Header': 'Angular'
});
console.log(secondHeaders.get('X-My-Custom-Header')); //'Angular'

var thirdHeaders = new Headers(secondHeaders);
console.log(thirdHeaders.get('X-My-Custom-Header')); //'Angular'