Promise vs Callback

JavaScript performance comparison

Revision 31 of this test case created by

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Callback
// async test
var d = deferred;

function getData(callback) {
  setTimeout(function() {
    callback('data')
  }, 100)
}

getData(function(data) {
  d.resolve()
})
pending…
Promise
// async test
var d = deferred;

function getData() {
  return new Promise(function(resolve) {
    setTimeout(function() {
      resolve('data')
    }, 100);
  })
}

getData().then(function(data) {
  d.resolve()
})
pending…

Compare results of other browsers

Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL.

0 Comments