button3.swift

struct ToggleButton: View {
    @State private var isOn = false
    
    var myAnimation: Animation {
        .spring(mass: 1, stiffness: 150, damping: 10, initialVelocity: 20)
    }
    
    var body: some View {
        Button(action: {
            withAnimation(self.myAnimation) {
                self.isOn.toggle()
            }
        }) {
            Text("Press me")
        }
        .scaleEffect(isOn ? 1.5 : 1.0)
    }
}