HTTP

fetch()

fetch is the main way to do HTTP requests.

This is an example on how to take a JavaScript object, POST it as JSON and receive JSON data which is turned back into a JavaScript object using fetch:

var status = 0;
var response_ok = false;

fetch('http://example.com', {
	method: 'POST',
	headers: { "Content-type": "application/json"},
	body: JSON.stringify(requestObject)
}).then(function(response) {
	status = response.status;  // Get the HTTP status code
	response_ok = response.ok; // Is response.status in the 200-range?
	return response.json();    // This returns a promise
}).then(function(responseObject) {
	// Do something with the result
}).catch(function(err) {
	// An error occurred somewhere in the Promise chain
});

Complete documentation for fetch can be found here

XMLHttpRequest

FuseJS supports XMLHttpRequest, go here for more information.