this.value = val;

  this.left = null;

  this.right = null;

  this.x = x;

  this.y = y;

}

​

Node.prototype.search = function(val) {

  if (this.value == val) {

    return this;

  } else if (val < this.value && this.left != null) {

    return this.left.search(val);

  } else if (val > this.value && this.right != null) {

    return this.right.search(val);

  }

  return null;

}

​

​

Node.prototype.visit = function(parent) {

  if (this.left != null) {

    this.left.visit(this);

  }

  console.log(this.value);

  fill(0);

  noStroke();

  textAlign(CENTER);

  text(this.value, this.x, this.y + 5);

  stroke(0);

  noFill();

  ellipse(this.x, this.y, 20, 20);

  line(parent.x, parent.y + 10, this.x, this.y - 10);

  if (this.right != null) {

    this.right.visit(this);

  }

}

​

Node.prototype.addNode = function(n) {

  if (n.value < this.value) {

    if (this.left == null) {

      this.left = n;

      this.left.x = this.x - 50;

      this.left.y = this.y + 50;

    } else {

      this.left.addNode(n);

    }

  } else if (n.value > this.value) {

    if (this.right == null) {

      this.right = n;

      this.right.x = this.x + 50;

      this.right.y = this.y + 50;

    } else {

      this.right.addNode(n);

    }

  }

}