Shape

Shape.js

class Shape {
    constructor(type, values) {
        this.type = type
        this.values = values
    }

    getArea() {
        let area = 0
        switch(this.type) {
            case "Rectangle":
                area = this.values[0] * this.values[1]
                break;
            case "Triangle":
                const s = (this.values[0] + this.values[1] + this.values[2]) / 2
                area = Math.sqrt(
                    s * (s-this.values[0]) * (s-this.values[1]) * (s-this.values[2])
                )
                break;
        }
        return area.toFixed(2)
    }

    getPerimeter() {
        let per = 0
        switch(this.type) {
            case "Rectangle":
                per = (this.values[0] + this.values[1])*2
                break;
            case "Triangle":
                per = (this.values[0] + this.values[1] + this.values[2]) 
                break;
        }
        return per.toFixed(2)
    }
}