HTML Audio/Video DOM loadstart Event
HTML Audio/Video DOM Reference
Example
Alert that the video is starting to load:
var vid = document.getElementById("myVideo");
vid.onloadstart =
function() {
alert("Starting to load video");
};
Try it yourself »
More "Try it Yourself" examples below.
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
Note: The addEventListener() method is not supported in Internet Explorer 8 and earlier versions.
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");
};
Try it yourself »
HTML Audio/Video DOM Reference
