本文實例講述了Javascript實現飛動廣告效果的方法。分享給大家供大家參考。具體實現方法如下：
<!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>飛動的廣告</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()">關閉</a></p> </div></body></html>希望本文所述對大家的javascript程序設計有所幫助。
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