js 搞点小事情

<script type="text/javascript">
	(function(){
	  if(!window.console){window.console ={log:function(){}};return;}
	  var me = 19;
	  var Star = function(){
	    this.x=0;
	    this.speed = 1;
	    this.y=0;
	  }
	  var score = 0;
	  var strs = function(){
	    var result = '';
	    for(var i=0;i<20;i++){
	      result+="\n"
	      for(var n =0;n<40;n++){
	        var now = '一'
	        if(i==19&&n==me){
	          now="码"
	        }
	        if(i==19&&n==me+1){
	          now="农"
	        }
	        stars.forEach(function(star){
	          var x= Math.floor(star.x);
	          var y = Math.floor(star.y)
	          if(x==n&&y==i){
	            if(Math.abs(star.y-19)<1&&(n==me||n==me+1)){
	              die()
	            }
	            now="车"
	          }
	        })
	        result+=now;

	      }

	    }
	    result+="       《全民躲车车》得分："+score
	    return result;
	  }
	  window.onkeydown = function(e){
	    if(e.keyCode==37){
	      me-=1;
	      if(me<0) me=0;
	    }else if(e.keyCode==39){
	      me+=1
	      if(me>38) me=38
	    }
	}
	var count=0;
	var die = function(){
	  clearInterval(timer1)
	  clearInterval(timer2)
	  clearInterval(timer3)
	  setTimeout(function(){
	    console.log("游戏结束，您的得分："+score+",分享到微博：%o","http://service.weibo.com/share/share.php?url=http%3A%2F%2Ftangeche.com&pic=http://img.souche.com/test/aab0c3d397799533e446759083c2f97c.gif&title=%E6%88%91%E5%9C%A8%E3%80%90%E5%BC%B9%E4%B8%AA%E8%BD%A6%E3%80%91%E7%8E%A9%E7%A0%81%E5%86%9C%E4%B8%93%E6%9C%89%E6%B8%B8%E6%88%8F%E3%80%8A%E7%A0%81%E5%86%9C%E8%BA%B2%E8%BD%A6%E8%BD%A6%E3%80%8B%E8%8E%B7%E5%BE%97%E4%BA%86"+score+"%E5%88%86%2C%E5%BF%AB%E6%9D%A5%E6%8C%91%E6%88%98%E6%AF%94%E6%AF%94%E7%9C%8B%E3%80%82%E7%94%A8%E8%B0%B7%E6%AD%8C%E6%B5%8F%E8%A7%88%E5%99%A8%E6%89%93%E5%BC%80www.tangeche.com%E9%A6%96%E9%A1%B5%EF%BC%8C%E6%89%93%E5%BC%80%E8%B0%83%E8%AF%95%E5%B7%A5%E5%85%B7%E7%9A%84%E6%8E%A7%E5%88%B6%E5%8F%B0%EF%BC%8C%E8%BE%93%E5%85%A5start%28%29%3B%E5%9B%9E%E8%BD%A6%EF%BC%8C%E7%84%B6%E5%90%8E%E6%8C%89%E7%85%A7%E6%8F%90%E7%A4%BA%E5%8D%B3%E5%8F%AF%E5%BC%80%E5%A7%8B%E6%B8%B8%E6%88%8F%E3%80%82%40%E5%BC%B9%E4%B8%AA%E8%BD%A6")
	  },100)

	}
	var stars = []
	var appearP = 1
	var timer1,timer2,timer3;
	var begin = function(){
	  timer1 = setInterval(function(){
	    var createCount=Math.floor(Math.random()*5*appearP)
	    for(var i=0;i<createCount;i++){
	      var star = new Star();
	      star.x = Math.floor(Math.random()*40)
	      star.y = 0;
	          star.speed = Math.random()*appearP;//Math.floor(Math.random()*3+1)
	          stars.push(star)
	        }

	      },1000)
	  timer2 = setInterval(function(){
	    stars.forEach(function(star,i){
	      star.y+=star.speed;
	      if (star.y>=31){
	        stars.splice(i,1);
	        score++
	      }
	    })
	    console.log(strs())
	    count++;
	    if(count>300){
	      console.clear()
	      count = 0;
	    }
	  },100)
	  timer3 = setInterval(function(){
	    appearP*=1.1
	  },3000)
	}
	console.log("输入 start(); 后即可开始《码农躲车车》游戏！")
	window.start = function(){
	  appearP=1.1
	  starts=[];
	  score=0;
	  me = 19;
	  count = 0;
	  console.log("%c请先用鼠标点击一下弹个车网页页面，游戏需要捕捉网页上的键盘事件（你应该懂吧）！","font-size:16px;color:#ff6700;")
	  console.log("使用键盘左右键移动最下方的码农，躲开所有的汽车，汽车数量和速度会一直增加，看看谁坚持的最久吧！")

	  var countdown = 6;
	  setTimeout(function(){
	    if(countdown--<=1){
	      begin();
	    }else{
	      console.log(countdown)
	      setTimeout(arguments.callee,1000)
	    }
	  },1000)
	  return ("倒计时！")
	}
	})();
</script>

　　进入debug模式，你会有不一样的体验。。。