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[网页设计]js自动切换图片


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html ="http://www.w3.org/1999/xhtml"> <head> <title> new document </title> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" /> <meta name="author" content="" /> <meta name="keywords" content="" /> <meta name="description" content="" /> <link rel="stylesheet" type="text/css" href="" /> <style type="text/css"></style> <script type="text/javascript">  window.onload=init;  var n=1; //图片标记数  var dingshi; //让图片动的定时器  function init(){    dingshi=window.setInterval("tupian()",1000);  }  //更换图片  function tupian(){    var obj=document.getElementById("img1");    n++;    if(n>=4){      n=1;    }    obj.src="yaj_"+n+".jpg";  }  //鼠标放上图片停止  function stoptupian(){    window.clearInterval(dingshi);  }  //鼠标离开图片动起来  function dongqilai(){    dingshi=window.setInterval("tupian()",1000);  } </script> </head> <body> <img src="yaj_1.jpg" onmouseover="stoptupian()" onmouseout="dongqilai()" id="img1"> </body></html>