The load
event is fired when an XMLHttpRequestUpload
transaction completes successfully.
The load
event is fired when an XMLHttpRequestUpload
transaction completes successfully.
Use the event name in methods like addEventListener()
, or set an event handler property.
js
addEventListener("load", (event) => {}); onload = (event) => {};
A ProgressEvent
. Inherits from Event
.
In addition to the properties listed below, properties from the parent interface, Event
, are available.
lengthComputable
Read only
A boolean flag indicating if the total work to be done, and the amount of work already done, by the underlying process is calculable. In other words, it tells if the progress is measurable or not.
loaded
Read only
A 64-bit unsigned integer value indicating the amount of work already performed by the underlying process. The ratio of work done can be calculated by dividing total
by the value of this property. When downloading a resource using HTTP, this only counts the body of the HTTP message, and doesn't include headers and other overhead.
total
Read only
A 64-bit unsigned integer representing the total amount of work that the underlying process is in the progress of performing. When downloading a resource using HTTP, this is the Content-Length
(the size of the body of the message), and doesn't include the headers and other overhead.
load
eventYou can use the load
event to detect the successful termination of an upload. For a complete code example that uploads a file and displays a progress bar, see the main XMLHttpRequestUpload
page.
js
// When the upload is finished, we hide the progress bar. xhr.upload.addEventListener("load", (event) => { progressBar.classList.remove("visible"); log.textContent = "Upload finished."; abortButton.disabled = true; });
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Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
load_event |
1 | 12 | 1 | 9 | ≤12.1 | 1.3 | ≤37 | 18 | 4 | ≤12.1 | 1 | 1.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequestUpload/load_event