韩老师的乌龟抓鸡

判断两个图片接近的时候用了绝对值的算法

 

  1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

  2 <html>

  3  <head>

  4   <title> 004 </title>

  5 <script type="text/javascript" language="javascript">

  6 

  7 

  8 function move(obj)

  9 {

 10 var wugui_height=59;

 11 var wugui_width=61;

 12 var cock_height=40;

 13 var cock_width=39;

 14 var wugui=document.getElementByIdx_x("wugui");

 15 if(window.event)

 16 {

 17 key=obj.keyCode;

 18 }

 19 

 20 var wugui_top=wugui.style.top;

 21 var wugui_left=wugui.style.left;

 22 

 23 

 24 wugui_top=parseInt(wugui_top.substring(0,wugui_top.indexOf("p")));

 25 wugui_left=parseInt(wugui_left.substring(0,wugui_left.indexOf("p")));

 26 

 27 

 28 if(obj.value=="down"||key==83)

 29 {wugui_top=wugui_top+10;

 30 wugui.style.top=(wugui_top+10)+"px";

 31 }

 32 else if(obj.value=="up"||key==87)

 33 {wugui_top=wugui_top-10;

 34 wugui.style.top=(wugui_top-10)+"px";

 35 }

 36 else if(obj.value=="left"||key==65)

 37 {wugui_left=wugui_left-10;

 38 wugui.style.left=(wugui_left-10)+"px";

 39 }

 40 else if(obj.value=="right"||key==68)

 41 {wugui_left=wugui_left+10;

 42 wugui.style.left=(wugui_left+10)+"px";

 43 }

 44 var cock=document.getElementByIdx_x("cock");

 45 

 46 var cock_top=cock.style.top;

 47 var cock_left=cock.style.left;

 48 

 49 cock_top=parseInt(cock_top.substring(0,cock_top.indexOf("p")));

 50 cock_left=parseInt(cock_left.substring(0,cock_left.indexOf("p")));

 51 

 52 x=Math.abs(cock_top-wugui_top);

 53 y=Math.abs(cock_left-wugui_left);

 54 

 55 if(x<60&&y<59)

 56 {

 57 alert("hahah");

 58 wugui.style.top=220+"px";

 59 wugui.style.left=220+"px";

 60 

 61 }

 62 

 63 }

 64 

 65 function test()

 66 {

 67 var t=document.getElementByIdx_x("td");

 68 

 69 }

 70 

 71 

 72 

 73 </script>

 74  </head>

 75 113  </body>

114 </html>

 

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