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 to be called periodically before the request is completed.
Event
event.loaded
the amount of data currently transfered.event.total
the total amount of data to be transferred.
XMLHttpRequest.onprogress = function (event) { event.loaded; event.total; };
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
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
onprogress
|
Chrome
Full support Yes |
Edge
Full support ≤18 |
Firefox
Full support Yes |
IE
Full support 10 |
Opera
Full support Yes |
Safari
Full support Yes |
WebView Android
Full support Yes |
Chrome Android
Full support Yes |
Firefox Android
Full support Yes |
Opera Android
Full support Yes |
Safari iOS
Full support Yes |
Samsung Internet Android
Full support Yes |
Legend
- Full support
- Full support
XMLHttpRequestEventTarget.onprogress by Mozilla Contributors is licensed under CC-BY-SA 2.5.