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HTML Audio/Video DOM Reference Manual
Wenn die Seite geladen wird, beginnt das Video zu laden:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>HTML-Audio/Verwendung der Video-Preruntime-Eigenschaft-Grundlegende Anleitung(oldtoolbag.com)</title>
</head>
<body>
<button onclick="enablePreload()" type="button">Video laden</button>
<button onclick="disablePreload()" type="button">Video nicht laden</button>
<button onclick="checkPreload()" type="button">Überprüfen Sie den Ladezustand</button>
<br>
<video id="video1" controls="controls">
<source src="movie.mp4" type="video/mp4">
<source src="movie.ogg" type="video/ogg">
Ihr Browser unterstützt keine HTML5 video-Tags.
</video>
<script>
myVid=document.getElementById("video1");
function enablePreload()
{
myVid.preload="auto";
}
function disablePreload()
{
myVid.preload="none";
}
function checkPreload()
{
alert(myVid.preload);
}
</script>
</body>
</html>Testen Sie, ob das funktioniert ›/›The preload attribute sets or returns whether the audio should start loading immediately after the page is loaded/Video.
The preload attribute allows the author to provide the browser with information about him/She believes that it will bring the best user experience tips. In some cases, this attribute can be ignored.
IEFirefoxOperaChromeSafari
All mainstream browsers support the preload attribute.
Note:Internet Explorer 8 and earlier versions do not support this attribute.
Set preload attribute:
audio|video.preload="auto|metadata|none"
Return preload attribute:
audio|video.preload
| Value | Description |
|---|---|
| auto | Indicates that audio should start loading once the page is loaded/Video. |
| metadata | Indicates that audio should be loaded only after the page is loaded/Metadata of the video. |
| none | Indicates that audio should not be loaded after the page is loaded/Video. |
| Return value: | String value, auto|metadata|none |
|---|