ECMAScript6中类中的碰撞函数

Question

I was wondering if anyone could help me, I am trying to create a collision function inside a class Ball. I am stuck as I don't know how to refer to a second ball object inside the Ball class.

Any help would be very appreciated best regards, Van

class Ball {

  constructor(bX, bY, bRadius, bcolor, dX, dY) {
    this.bX = bX;
    this.bY = bY;
    this.bRadius = bRadius;
    this.bcolor = bcolor;
    this.dX = dX;
    this.dY = dY;
  }

  drawBall() {
    //
  }

  moveBall() {
    //
  }

  bounce() {
    //
  }

  collisions(Ball ball2) { //don't know how to refer to Ball & ball2
    var deltaX = this.bX - ball2.bX;
    var deltaY = this.bY - ball2.bY;
    // ....
    if (sqDistance <= sqRadius) {
      alert("going to hit!");
  }
};

Answer 1

ES6 does not support type of parameters.

So your code should just omit type collisions(ball2) {

Look at TypeScript when you need strict type check.