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.
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