js制作简单的打老鼠游戏

	
		
 
		
		
		
	
	
		
 
			
  
			
  
			
  
 
   
    分数
    
    
   
    命中率
    
    
   
    倒计时
    
    
  
			
			
   
   
     
      
      
      
      
      
     
     
      
      
      
      
      
     
     
      
      
      
      
      
     
     
      
      
      
      
      
     
     
      
      
      
      
      
     
   
  
		
 
	

var playing=false;
var interId=null;
var timeId=null;
//分数
var score=0;
//打中率
var success=0;
//点击次数
var beat=0;
//时间
var countDown=60;

//击中次数
var knock=0;

//游戏结束
function gameOver(){
	timeStop();
	playing=false;
	clearMouse();
	alert("游戏结束！你击中了"+score+"只老鼠"+"很棒棒啊！");
	score=0;
	success=0;
}





//时间显示
function timeShow(){
	
	document.form1.remtime.value=countDown;
	if(countDown==0){
		gameOver();
		return ;
	}else{
		countDown=countDown-1;
		timeId=setTimeout("timeShow()",1000);
	}
}

//中途停止
function timeStop(){
	clearTimeout(timeId);
	clearInterval(interId);
}

//老鼠随机出现
function show(){
	if(playing){
		//获取随机数
		var current=Math.floor(Math.random()*25);
		//换成老鼠图片
		document.getElementById("td["+current+"]").innerHTML= '';
		//隐藏图片
		setTimeout("document.getElementById('td["+current+"]').innerHTML=''",500);
	}
}

//清除所有老鼠
function clearMouse(){
	beat++;
	for(var i=1;i<26;i++){
		document.getElementById("td["+i+"]").innerHTML="";
	}
}

//打老鼠
function hit(i){
	if(playing==false){
		alert("请点击开始!");
		return ;
	}else{
		beat++;
		if(document.getElementById("td["+i+"]").innerHTML!=""){
			score++;
			knock++;
			success=knock/beat;
			document.form1.score.value=score;
			document.form1.success.value=success;
			document.getElementById("td["+i+"]").innerHTML="";
		}else{
			score--;
			success=knock/beat;
			document.form1.score.value=score;
			document.form1.success.value=success;
		}
	}
}

//开始游戏
function gameStart(){
	playing=true;
	interId=setInterval("show()",1000);
	document.form1.score.value=score;
	document.form1.success.value=success;
	timeShow();
}