There is an ajax operator on the Rx object.
const ajax: any;
Description
It creates an observable for an Ajax request with either a request object with
url, headers, etc or a string for a URL.
Using ajax() to fetch the response object that is being returned from API.
import { ajax } from 'rxjs/ajax';
import { map, catchError } from 'rxjs/operators';
import { of } from 'rxjs';
const obs$ = ajax(`https://api.github.com/users?per_page=5`).pipe(
map(userResponse => console.log('users: ', userResponse)),
catchError(error => {
console.log('error: ', error);
return of(error);
})
);
Using ajax.getJSON() to fetch data from API.
import { ajax } from 'rxjs/ajax';
import { map, catchError } from 'rxjs/operators';
import { of } from 'rxjs';
const obs$ = ajax.getJSON(`https://api.github.com/users?per_page=5`).pipe(
map(userResponse => console.log('users: ', userResponse)),
catchError(error => {
console.log('error: ', error);
return of(error);
})
);
Using ajax() with object as argument and method POST with a two seconds delay.
import { ajax } from 'rxjs/ajax';
import { of } from 'rxjs';
const users = ajax({
url: 'https://httpbin.org/delay/2',
method: 'POST',
headers: {
'Content-Type': 'application/json',
'rxjs-custom-header': 'Rxjs'
},
body: {
rxjs: 'Hello World!'
}
}).pipe(
map(response => console.log('response: ', response)),
catchError(error => {
console.log('error: ', error);
return of(error);
})
);
Using ajax() to fetch. An error object that is being returned from the request.
import { ajax } from 'rxjs/ajax';
import { map, catchError } from 'rxjs/operators';
import { of } from 'rxjs';
const obs$ = ajax(`https://api.github.com/404`).pipe(
map(userResponse => console.log('users: ', userResponse)),
catchError(error => {
console.log('error: ', error);
return of(error);
})
);