The HTML DOM onloadstart event occurs when the loading process of a specified audio/video starts. events that occur during the loading process of an audio/video:
- onloadstart
- ondurationchange
- onloadedmetadata
- onloadeddata
- onprogress
- oncanplay
- oncanplaythrough
Syntax:
- In HTML:
<element onloadstart="myScript">
- In JavaScript:
object.onloadstart = function(){myScript};- In JavaScript, using the addEventListener() method:
object.addEventListener("loadstart", myScript);Example: In this example, we will see the use of DOM onloadstart Event.
html
<!DOCTYPE html><html>
<head>
<title>
HTML DOM loadstar event
</title>
</head>
<body>
<h1 style="color:green">
GeeksforGeeks
</h1>
<h2>DOM loadstar event</h2>
<video controls id="VidId">
<source src=
type="video/mp4">
</video>
<script>
document.getElementById(
"VidId").addEventListener(
"loadstart", GFGFun);
function GFGFun() {
alert("Start the load video");
}
</script>
</body>
</html>
|
Output:
Supported Browsers: The browsers supported by HTML DOM onloadstart event are listed below:
- Google Chrome 1
- Edge 12
- Internet Explorer 9
- Firefox 6
- Apple Safari 4
- Opera 12.1