Javascript实现飞动广告效果的方法

2019-11-20 12:24:52

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本文实例讲述了Javascript实现飞动广告效果的方法。分享给大家供大家参考。具体实现方法如下：

<!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><meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  <title>飞动的广告</title>  <style type="text/css">    body,div,p    {      margin:0;      padding:0;      font-size:14px;    }    #divMain    {      width:200px;      height:800px;    }  </style>  <script type="text/javascript">    var tmrID;    var x = 1;    var y = 1;    function moveAD() {      var divFly = document.getElementById("divFly");      var moveX = parseInt(divFly.style.left) + x * 5;      var moveY = parseInt(divFly.style.top) + y * 5;      //divFly.offsetWidth      if ((moveX + divFly.offsetWidth) >= document.body.clientWidth) {        x = -1;      }      if ((moveY + divFly.offsetHeight) >= document.body.clientHeight) {        y = -1;      }      if (moveX <= 0) {        x = 1;      }      if (moveY <= 0) {        y = 1;      }      divFly.style.left = moveX;      divFly.style.top = moveY;    }    function ClearTimer() {      clearInterval(tmrID);    }    function fly() {      tmrID = setInterval(moveAD, 20);    }    window.onload = function () {      var divFly = document.getElementById("divFly");      divFly.onmouseover = function () {        ClearTimer();      }      divFly.onmouseout = function () {        fly();      }      fly();    }    function closeAD() {      ClearTimer();      var divFly = document.getElementById("divFly");      divFly.style.display = "none";    }  </script></head><body>  <div id="divMain"></div>  <div id="divFly" style="position:absolute;top:0;left:0;border:1px solid green;">    <img src="../images/fly.gif" height="60px" width="60px" />    <p><a href="javascript:void(0)" onclick="closeAD()">关闭</a></p>  </div></body></html>

希望本文所述对大家的javascript程序设计有所帮助。

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