The align property of the VTTCue interface represents the alignment of all of the lines of text in the text box.

A string containing one of the following values:

"start"

Start alignment.

"center"

Center alignment.

"end"

End alignment.

"left"

Left alignment.

"right"

Right alignment.

In the following example a new VTTCue is created, then the value of align is set to "start". The value is then printed to the console.

let video = document.querySelector('video');
let track = video.addTextTrack("captions", "Captions", "en");
track.mode = "showing";

let cue1 = new VTTCue(0, 0.9, 'Hildy!');
cue1.align = 'start';
console.log(cue1.align);

track.addCue(cue1);