The HTMLMediaElement.readyState
property indicates the readiness state of the media.
The HTMLMediaElement.readyState
property indicates the readiness state of the media.
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. |
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(); } });
Specification |
---|
HTML Standard # dom-media-readystate-dev |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
readyState |
3 | 12 | 3.5 | 5.5 | ≤12.1 | 3.1 | ≤37 | 18 | 4 | ≤12.1 | 3 | 1.0 |
HTMLMediaElement
: Interface used to define the HTMLMediaElement.readyState
property
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https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/readyState