Uncaught SyntaxError: Unexpected token ILLEGAL

?這個說是for(var i=0;i<this.num;i++）錯了

代碼

var?fruitObject=function(){
this.alive=[];//boolean
this.orange=new?Image();
this.bliue=new?Image();
this.x=[];
this.y=[];

}
fruitObject.prototype.num=30;
fruitObject.prototype.init=function()?{
	for(var?i=0;i<this.num;i++）{
		this.alive[i]=true;
		this.x[i]=0;
		this.y[i]=0;
		this.born(i);
	}
	this.orange.src="./src/fruit.png";
	this.blue.src="./src/blue.png";
}
fruitObject.prototype.draw=function(){
	for(var?i=0;i<this.name;i++){
		ctx2.drawImage(this.orange,this.x[i],this.y[i]);

	}

}

fruitObject.prototype.born=function(i){
	var?aneid=Math.floor(Math.random()*ane.num);
	this.x[i]=ane.x[aneid];
	this.y[i]=canHeight-ane.length[aneid];
?

}