VTTCue: vertical property

The vertical property of the VTTCue interface is a string representing the cue’s writing direction.

Value

A string containing one of the following values:

• "" (an empty string)
  • : Represents a horizontal writing direction.
• "rl"
  • : Represents a vertical writing direction growing to the left.
• "lr"
  • : Represents a vertical writing direction growing to the right.

Examples

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

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

let cue = new VTTCue(0, 0.9, "Hildy!");
cue.vertical = "rl";
console.log(cue.vertical);

track.addCue(cue);

Specifications

Browser compatibility