HTML Audio/Video DOM loadstart Event

HTML Audio/Video DOM Reference : Alert that the video is starting to load

Definition and Usage

The loadstart event occurs when the browser starts looking for the specified audio/video. This is when the loading process starts.

During the loading process of an audio/video, the following events occur, in this order:

Browser Support

The numbers in the table specify the first browser version that fully supports the event.

Event
loadstart Yes 9.0 Yes Yes Yes

Syntax

In HTML:

<audio|video onloadstart="myScript">Try it

In JavaScript:

audio|video.onloadstart=function(){myScript};Try it

In JavaScript, using the addEventListener() method:

audio|video.addEventListener("loadstart", myScript);Try it

Technical Details

Supported HTML tags: <audio> and <video>
Supported JavaScript objects: Audio, Video

More Examples

Example

Alert that the audio is starting to load:

var aud = document.getElementById("myAudio");
aud.onloadstart = function() {
    alert("Starting to load video");
};

❮ HTML Audio/Video DOM Reference