HTMLMediaElement: networkState property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The HTMLMediaElement.networkState property indicates the current state of the fetching of media over the network.

Value

An unsigned short. Possible values are:

Constant Value Description
NETWORK_EMPTY 0 There is no data yet. Also, readyState is HAVE_NOTHING.
NETWORK_IDLE 1 HTMLMediaElement is active and has selected a resource, but is not using the network.
NETWORK_LOADING 2 The browser is downloading HTMLMediaElement data.
NETWORK_NO_SOURCE 3 No HTMLMediaElement src found.

Examples

This example will listen for the audio element to begin playing and then check if it is still loading data.

html
<audio id="example" preload="auto">
  <source src="sound.ogg" type="audio/ogg" />
</audio>
js
const obj = document.getElementById("example");

obj.addEventListener("playing", () => {
  if (obj.networkState === 2) {
    // Still loading…
  }
});

Specifications

Specification
HTML
# dom-media-networkstate-dev

Browser compatibility

See also

  • HTMLMediaElement: Interface used to define the HTMLMediaElement.networkState property