HTMLMediaElement: readyState property
The HTMLMediaElement.readyState property indicates the
readiness state of the media.
Value
An unsigned short. Possible values are:
| Constant | Value | Description |
|---|---|---|
HAVE_NOTHING |
0 | No information is available about the media resource. |
HAVE_METADATA |
1 | Enough of the media resource has been retrieved that the metadata attributes are initialized. Seeking will no longer raise an exception. |
HAVE_CURRENT_DATA |
2 | Data is available for the current playback position, but not enough to actually play more than one frame. |
HAVE_FUTURE_DATA |
3 | Data for the current playback position as well as for at least a little bit of time into the future is available (in other words, at least two frames of video, for example). |
HAVE_ENOUGH_DATA |
4 | Enough data is available—and the download rate is high enough—that the media can be played through to the end without interruption. |
Examples
This example will listen for audio data to be loaded for the element example. It will
then check if at least the current playback position has been loaded. If it has, the
audio will play.
html
<audio id="example" preload="auto">
<source src="sound.ogg" type="audio/ogg" />
</audio>
js
const obj = document.getElementById("example");
obj.addEventListener("loadeddata", () => {
if (obj.readyState >= 2) {
obj.play();
}
});
Specifications
| Specification |
|---|
| HTML Standard # dom-media-readystate-dev |
Browser compatibility
BCD tables only load in the browser
See also
HTMLMediaElement: Interface used to define theHTMLMediaElement.readyStateproperty