已采纳回答 / 小黍
                                
                                                            fruitObj.prototype.num=30;fruitObj.prototype.init=function这两句你都多出了一个括号,正确的如上,fruitObj后不要括号
                            
                        
                        2016-11-04
                
            
                                已采纳回答 / 码农2012
                                
                                                            ctx2.drawImage(this.pic,this.x[i]-this.l[i]*0.5,this.y[i]-this.l[i]*0.5,this.l[i],this.l[i]);去掉pic前面的.this
                            
                        
                        2016-10-21
                
            
                                已采纳回答 / 请叫我蜗牛小姐
                                
                                                            ctx2.save();    ctx2.globalAlpha = 0.6;    ctx2.lineWidth = 20;    ctx2.lineCap = "round";    ctx2.strokeStyle = "#3b154e";    for (var i = 0; i < this.num;i++)    {        ctx2.beginPath();        ctx2.moveTo(this.x[i], canHeight);        ctx2.lineTo(...
                            
                        
                        2016-10-09
                
             
             
        












