Run results for: Native XHR vs XHR 2

Run details:

User agent: Mozilla/5.0 (Linux; Android 8.0.0; SO-01J Build/41.3.B.0.405) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Mobile Safari/537.36

Browser: Chrome Mobile 67

Operating system: Android 8.0.0

Device Platform: Mobile

Date tested: 5 years ago

Test name	Executions per second
Native XHR	873.1 Ops/sec
Native XHR (enhanced)	844.4 Ops/sec
Native XHR 2	929.2 Ops/sec
Fetch	711.5 Ops/sec

Script Preparation code:

function showResult(data) {
    //console.log(data);
}
var newUrl = "https://www.googleapis.com/discovery/v1/apis";

Tests:

Native XHR
var xhr = new XMLHttpRequest(); xhr.open("GET", newUrl, true); xhr.onreadystatechange = function() { if (xhr.readyState == 4) { showResult(xhr); } } xhr.send();
Native XHR (enhanced)
var xhr = new XMLHttpRequest(); xhr.open("GET", newUrl, true); xhr.onreadystatechange = function() { if (xhr.readyState === 4) { showResult(xhr); } } xhr.send();
Native XHR 2
var xhr = new XMLHttpRequest(); xhr.onload = showResult; xhr.open("GET", newUrl, true); xhr.send();
Fetch
var request = fetch(newUrl).then(showResult);

Run results for: Native XHR vs XHR 2

Pure JavaScript XHR Benchmark

Native XHR

Native XHR (enhanced)

Native XHR 2

Fetch