HTML Audio/Video DOM canplaythrough Event

Alert that the video can be played all the way through, without stopping:

let vid = document.getElementById("myVideo");
vid.oncanplaythrough = function() {
alert("Can play through video without stopping");
};

More "Try it Yourself" examples below.

Definition and Usage

The canplaythrough event occurs when the browser estimates it can play through the specified audio/video without having to stop for buffering.

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

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

Event
canplaythrough	Yes	9.0	Yes	Yes	Yes

In HTML:

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

In JavaScript:

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

In JavaScript, using the addEventListener() method:

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

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

Alert that the audio can be played all the way through, without stopping:

let aud = document.getElementById("myAudio");
aud.oncanplaythrough = function() {
alert("Can play through audio without stopping");
};