GennadySht
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							<header></header>

<body>
    <script>
        class RGB {
            #r = 0
            #g = 0
            #b = 0
            checkChannelValue(val) {
                val = +val
                if (typeof val !== "number" || val < 0 || val > 255) {
                    throw new Error(`invalid channel value: ${val}`)
                }
            }
            get r() {
                return this.#r;
            }
            set r(val) {
                this.checkChannelValue(val);
                this.#r = +val;
            }
            get g() {
                return this.#g;
            }
            set g(val) {
                this.checkChannelValue(val);
                this.#g = +val;
            }
            get b() {
                return this.#b;
            }
            set b(val) {
                this.checkChannelValue(val);
                this.#b = +val;
            }
            set hex(val) {
                let matchColors = /^#([0-9A-Fa-f]{2})([0-9A-Fa-f]{2})([0-9A-Fa-f]{2})$/;
                let match = matchColors.exec(val);
                if (match !== null && match.length == 4) {
                    this.r = parseInt(`${match[1]}`, 16);
                    this.g = parseInt(`${match[2]}`, 16);
                    this.b = parseInt(`${match[3]}`, 16);
                    return;
                }
                throw new Error(`incorrect hex color parameter: ${val}`);
            }
            get hex() {
                return `#${this.r.toString(16).toUpperCase()}${this.g.toString(16).toUpperCase()}${this.b.toString(16).toUpperCase()}`;
            }
            set rgb(val) {
                let matchColors = /^rgb\((\d{1,3}), (\d{1,3}), (\d{1,3})\)$/;
                let match = matchColors.exec(val);
                if (match !== null && match.length == 3) {
                    this.r = match[1];
                    this.g = match[2];
                    this.b = match[3];
                    return;
                }
                throw new Error(`incorrect rgb color parameter: ${val}`);
            }
            get rgb() {
                return `rgb(${this.r}, ${this.g}, ${this.b})`;
            }

           /* constructor(r, g, b) {
                this.r = r;
                this.g = g;
                this.b = b;
            }*/
            constructor(colorString) {
                if (colorString.startsWith("#"))
                    this.hex = colorString;
                else
                    this.rgb = colorString;
            }

        }
        function assertAreEqual(actual, expected) {
            if (actual != expected)
                throw new Error(`not expected value. actual: ${actual}, expected: ${expected}`);
        }
        //let color = new RGB('#AABBFF');
        //assertAreEqual(color.hex, '#AABBFF');
        let color = new RGB ('rgb(55, 49, 121)');
        assertAreEqual(color.rgb, ('55, 49, 121'));
        assertAreEqual(color.hex, `#373179`);
        //*color.rgb = `rgb(55, 49, 121)`;
        //assertAreEqual(color.r, 55);
        //assertAreEqual(color.g, 49);
       // assertAreEqual(color.b, 121);
        //assertAreEqual(color.rgb, `rgb(55, 49, 121)`);
        //assertAreEqual(color.hex, `#373179`);
    </script>
</body>