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);