Xhr

An tiny and minimal function for XMLHttpRequests. Falls back to ActiveX for older versions of Internet Explorer.

Installation

Xhr is a component.

$ component install matthewp/xhr

API

xhr(url, callback, errback)

Perform a GET request to the given url, calling the callback when complete. If an error is encountered, the errback function will be called with an XhrError instance.

xhr(options, callback, errback)

Perform an HTTP requests with the given options, calling callback when complete. If an error is encountered, the errback function will be called with an XhrError instance.

options

The options object has the following properties:

url

The url to perform the request on.

method

The HTTP method to use (GET, POST, PUT, DELETE, etc.). Defaults to GET.

headers

An Object in which the keys are the header key and the values are the header value. Example

headers: {
  'Accept': 'application/json'
}

data

The data to send along as the body of the request. For example, in a POST request.

credentials

If true, the withCredentials value will be applied to the XMLHttpRequest object, which allows for CORS requests.

Examples

var xhr = require('xhr');

var fooData = JSON.stringify({
  foo: 'bar',
  baz: 'qux'
});

xhr({
  url: 'http://example.com/foos',
  headers: {
    'Content-Type': 'application/json',
    'Content-Length': fooData.length
  },
  method: 'POST',
  data: fooData
},
  function onSuccess() {
    console.log('It worked!');
  },
  function onError(err) {
    console.log('There was an error: ' + err.message);
  });