var x;

​

function setup() {

  createCanvas(400, 400);

  x = 10;

  button = createButton("YooooLOO");

  button.position(10,10);

  button.mousePressed(theyPressedMe);

}

​

function draw() {

  background(220);

}

​

function theyPressedMe(){

  print("Hey");

  x = x + 10;

  button.position(x,10);

}