微信小程序五子棋游戏的悔棋实现方法【附demo源

this.page.changeUndo = function(e){
   if (self.START_GAME){
    var lastM = self.myPoint.length - 1;
    var LastA = self.AIPoint.length - 1;
    self.drawChessboard();
    if (self.boolAI && !self.boolMy && lastM >= 0){
     self.ABSCISSA_ARRAY[self.myPoint[lastM].pointY].push(self.myPoint[lastM]);
     self.myPoint.splice(lastM, 1);
    } else if (!self.boolAI && self.boolMy && LastA >= 0){
     self.ABSCISSA_ARRAY[self.AIPoint[LastA].pointY].push(self.AIPoint[LastA]);
     self.AIPoint.splice(LastA, 1);
    }
    self.drawAll();
   }
  }