Angular-Docs-Cn/modules/@angular/http/src/backends/browser_xhr.ts

import {Injectable} from '@angular/core';

/**
 * A backend for http that uses the `XMLHttpRequest` browser API.
 *
 * Take care not to evaluate this in non-browser contexts.
 */
@Injectable()
export class BrowserXhr {
  constructor() {}
  build(): any { return <any>(new XMLHttpRequest()); }
}