Run results for: xhr vs fetch perf

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.127 Safari/537.36

Browser: Chrome 100

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
xhr	10993.5 Ops/sec
fetch	10688.2 Ops/sec

Tests:

xhr
new Promise(resolve => { const xhr = new XMLHttpRequest(); xhr.open('GET', 'https://www.googleapis.com/discovery/v1/apis'); xhr.onload = () => resolve(JSON.parse(xhr.responseText)); xhr.send(); }).then(console.log)
fetch
fetch('https://www.googleapis.com/discovery/v1/apis').then(response => response.json()).then(console.log)