pyramid.js

class Pyramid {
    constructor(height) {
        this.height = height;
        this.line = 1;
    }

    print() {
        console.clear()
        while (this.line <= this.height) {
            this.printLine();
            this.line += 2;
        }
    }

    printLine() {
        let countSpaces = (this.height - this.line) / 2;
        let spaces = " ".repeat(countSpaces);
        let line = spaces + "*".repeat(this.line) + spaces;
        console.log(line);
    }
}

let h = Math.random() * 50 + 3;

let pyramid = new Pyramid(h);

pyramid.print();