XMLHttpRequestEventTarget.onprogress

The XMLHttpRequestEventTarget.onprogress is the function called periodically with information when an XMLHttpRequest before success completely .

Syntax

XMLHttpRequest.onprogress = callback;

Values

  • callback is the function called periodically before complete the request.

Event

  • event.loaded  how many information recived in periodically call.
  • event.size  how many information the request have.
XMLHttpRequest.onprogress = function (event) {
  event.loaded;
  event.size;
};

Example

var xmlhttp = new XMLHttpRequest(),
  method = 'GET',
  url = 'https://developer.mozilla.org/';

xmlhttp.open(method, url, true);
xmlhttp.onprogress = function () {
  //do something 
};
xmlhttp.send();

Specifications

Specification Status Comment
XMLHttpRequest Living Standard WHATWG living standard

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 1 1.0 (1.7 or earlier) 7 (Yes) 1.2
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? 1.0 (Yes) ? ? ?

Document Tags and Contributors

 Contributors to this page: teoli, Taoja
 Last updated by: teoli,