本文實例講述了JS實現彈性漂浮效果的廣告代碼。分享給大家供大家參考。具體如下:
這裡介紹一款JS彈性漂浮廣告代碼,碰到網頁瀏覽器的邊緣就會順著彈力的方向自動漂浮下去,不停的在網頁上漂來漂去,漂浮廣告代碼是很早時候就有的程式碼了,使用廣泛,而且做為廣告來說,好像效果還不錯,因為它在不停的動,讓人在視覺上感覺到有一種吸引力。其中的JS程式碼你可以扣出來保存在一個單獨的JS檔中,使用時呼叫即可。
運作效果截圖如下:
線上示範網址如下:
http://demo.jb51.net/js/2015/js-move-pic-style-adv-codes/
具體程式碼如下:
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>Js弹性漂浮广告代码</title> </head> <body> <DIV id=img1 style="Z-INDEX: 100; LEFT: 2px; WIDTH: 59px; POSITION: absolute; TOP: 43px; HEIGHT: 61px; visibility: visible;"><a href="#" target="_blank"><img src="images/pic.gif" width="80" height="80" border="0"></a></DIV> <SCRIPT language="JavaScript"> var xPos = 300; var yPos = 200; var step = 1; var delay = 30; var height = 0; var Hoffset = 0; var Woffset = 0; var yon = 0; var xon = 0; var pause = true; var interval; img1.style.top = yPos; function changePos() { width = document.body.clientWidth; height = document.body.clientHeight; Hoffset = img1.offsetHeight; Woffset = img1.offsetWidth; img1.style.left = xPos + document.body.scrollLeft; img1.style.top = yPos + document.body.scrollTop; if (yon) {yPos = yPos + step;} else {yPos = yPos - step;} if (yPos < 0) {yon = 1;yPos = 0;} if (yPos >= (height - Hoffset)) {yon = 0;yPos = (height - Hoffset);} if (xon) {xPos = xPos + step;} else {xPos = xPos - step;} if (xPos < 0) {xon = 1;xPos = 0;} if (xPos >= (width - Woffset)) {xon = 0;xPos = (width - Woffset); } } function start() { img1.visibility = "visible"; interval = setInterval('changePos()', delay); } function pause_resume() { if(pause) { clearInterval(interval); pause = false;} else { interval = setInterval('changePos()',delay); pause = true; } } start(); </SCRIPT> </body> </html>
希望本文所述對大家的javascript程式設計有所幫助。