The text property of the VTTCue interface represents the text contents of the cue.
A string containing the raw text of the cue.
In the following example a new VTTCue is created, then the value of size is set to the string "new cue value". 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.text = "new cue value";
console.log(cue.text); // 'new cue value';
track.addCue(cue);