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xhr2

XMLHttpRequest emulation for node.js

  • 0.2.1
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What is xhr2?

The xhr2 npm package is a server-side implementation of the XMLHttpRequest API, which is commonly used in web browsers for making HTTP requests. This package allows Node.js applications to make HTTP requests using the familiar XMLHttpRequest interface.

What are xhr2's main functionalities?

Basic GET Request

This feature allows you to make a basic GET request to a specified URL. The code sample demonstrates how to open a connection, send the request, and handle the response.

const XMLHttpRequest = require('xhr2');
const xhr = new XMLHttpRequest();
xhr.open('GET', 'https://jsonplaceholder.typicode.com/posts/1', true);
xhr.onload = function () {
  if (xhr.status >= 200 && xhr.status < 300) {
    console.log(xhr.responseText);
  } else {
    console.error('Request failed with status:', xhr.status);
  }
};
xhr.send();

POST Request with Data

This feature allows you to make a POST request with data. The code sample demonstrates how to set the request method to POST, set the appropriate headers, and send JSON data in the request body.

const XMLHttpRequest = require('xhr2');
const xhr = new XMLHttpRequest();
xhr.open('POST', 'https://jsonplaceholder.typicode.com/posts', true);
xhr.setRequestHeader('Content-Type', 'application/json;charset=UTF-8');
xhr.onload = function () {
  if (xhr.status >= 200 && xhr.status < 300) {
    console.log(xhr.responseText);
  } else {
    console.error('Request failed with status:', xhr.status);
  }
};
xhr.send(JSON.stringify({ title: 'foo', body: 'bar', userId: 1 }));

Handling Errors

This feature allows you to handle errors that may occur during the request. The code sample demonstrates how to handle both HTTP status errors and network errors.

const XMLHttpRequest = require('xhr2');
const xhr = new XMLHttpRequest();
xhr.open('GET', 'https://jsonplaceholder.typicode.com/invalid-url', true);
xhr.onload = function () {
  if (xhr.status >= 200 && xhr.status < 300) {
    console.log(xhr.responseText);
  } else {
    console.error('Request failed with status:', xhr.status);
  }
};
xhr.onerror = function () {
  console.error('Network error occurred');
};
xhr.send();

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Package last updated on 10 Feb 2021

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