js实现图片轮换效果代码

复制代码 代码如下:

  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

  <html xmlns="http://www.w3.org/1999/xhtml">

  <head>

  <title></title>

  <script type="text/javascript">

  var numb = 0;

  var imgnumb = 1;

  function showimg() {

  //两张图片切换方法1 /*numb++;

  if (numb % 2 == 0) {

  document.getElementById('img1').setAttribute('src', 'images/1.jpg');

  }

  else {

  document.getElementById('img1').setAttribute('src', 'images/2.jpg');

  }*/

  //两张图片切换方法2 /*if (numb == 0) {

  document.getElementById('img1').setAttribute('src', 'images/2.jpg');

  numb = 1;

  }

  else {

  document.getElementById('img1').setAttribute('src', 'images/1.jpg');

  numb = 0;

  }*/

  }

  /图片轮换/多张 function imgfor() {

  imgnumb++;

  document.getElementById('img1').setAttribute('src', 'images/' + imgnumb + '.jpg');

  if (imgnumb == 9) {

  imgnumb = 0;

  }

  }

  var clearid;

  function clearfun() {

  clearInterval(clearid);

  }

  clearid=setInterval(imgfor, 1000);

  </script>

  </head>

  <body>

  <img alt="" id="img1" class="style1" src="images/1.jpg" width="500px" height="500px" />

  <input type="button" value="两张图片切换" onclick="showimg();" />

  <br />

  <input type="button" value="多张图片轮换" onclick="imgfor();;" />

  <br />

  <input type="button" value="结束执行" onclick="clearfun();" />

  </body>

  </html>