Telereview/code/interface_borne/assets/js/audio_page.js

class AudioPage {
    constructor() {
        this.isEnabled = false;
        this.DOMElement = document.getElementById("audio");

    }
    set enabled(isEnabled) {
        this.isEnabled = isEnabled;
        this.DOMElement.style.display = isEnabled ? "block" : "none";
        document.getElementById("grade").innerHTML  = "";
    }

    setGrade(grade) {
        if(this.isEnabled) {
            document.getElementById("grade").innerHTML = grade.toString();
        }
    }
}