javascript代码实现 随机漂浮的广告图片 代码实例

来源:GK导航    date:2022-9-6    标签:,     admin

<!DOCTYPE html> <html>     <head>         <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />         <title>js随机飘动的广告图片代码</title>     </head>     <body>         <div id="main" style="position:absolute;">             <div style="text-align:right;cursor:pointer;" id="close">关闭</div>             <a href="" target="_blank"><img src="图片地址.jpg" border="0" width="214" height="73" /></a>         </div>     </body> </html> <script src="http://libs.baidu.com/jquery/1.11.3/jquery.min.js"></script> <script>     <!--//公共脚本文件 main.js     function addEvent(obj, evtType, func, cap) {         cap = cap || false;         if (obj.addEventListener) {             obj.addEventListener(evtType, func, cap);             return true;         } else if (obj.attachEvent) {             if (cap) {                 obj.setCapture();                 return true;             } else {                 return obj.attachEvent("on" + evtType, func);             }         } else {             return false;         }     }     function removeEvent(obj, evtType, func, cap) {         cap = cap || false;         if (obj.removeEventListener) {             obj.removeEventListener(evtType, func, cap);             return true;         } else if (obj.detachEvent) {             if (cap) {                 obj.releaseCapture();                 return true;             } else {                 return obj.detachEvent("on" + evtType, func);             }         } else {             return false;         }     }     function getPageScroll() {         var xScroll, yScroll;         if (self.pageXOffset) {             xScroll = self.pageXOffset;         } else if (document.documentElement && document.documentElement.scrollLeft) {             xScroll = document.documentElement.scrollLeft;         } else if (document.body) {             xScroll = document.body.scrollLeft;         }         if (self.pageYOffset) {             yScroll = self.pageYOffset;         } else if (document.documentElement && document.documentElement.scrollTop) {             yScroll = document.documentElement.scrollTop;         } else if (document.body) {             yScroll = document.body.scrollTop;         }         arrayPageScroll = new Array(xScroll, yScroll);         return arrayPageScroll;     }     function GetPageSize() {         var xScroll, yScroll;         if (window.innerHeight && window.scrollMaxY) {             xScroll = document.body.scrollWidth;             yScroll = window.innerHeight + window.scrollMaxY;         } else if (document.body.scrollHeight > document.body.offsetHeight) {             xScroll = document.body.scrollWidth;             yScroll = document.body.scrollHeight;         } else {             xScroll = document.body.offsetWidth;             yScroll = document.body.offsetHeight;         }         var windowWidth, windowHeight;         if (self.innerHeight) {             windowWidth = self.innerWidth;             windowHeight = self.innerHeight;         } else if (document.documentElement && document.documentElement.clientHeight) {             windowWidth = document.documentElement.clientWidth;             windowHeight = document.documentElement.clientHeight;         } else if (document.body) {             windowWidth = document.body.clientWidth;             windowHeight = document.body.clientHeight;         }         if (yScroll < windowHeight) {             pageHeight = windowHeight;         } else {             pageHeight = yScroll;         }         if (xScroll < windowWidth) {             pageWidth = windowWidth;         } else {             pageWidth = xScroll;         }         arrayPageSize = new Array(pageWidth, pageHeight, windowWidth, windowHeight)         return arrayPageSize;     }      var AdMoveConfig = new Object();     AdMoveConfig.IsInitialized = false;     AdMoveConfig.AdCount = 0;     AdMoveConfig.ScrollX = 0;     AdMoveConfig.ScrollY = 0;     AdMoveConfig.MoveWidth = 0;     AdMoveConfig.MoveHeight = 0;     AdMoveConfig.Resize = function () {         var winsize = GetPageSize();         AdMoveConfig.MoveWidth = winsize[2];         AdMoveConfig.MoveHeight = winsize[3];         AdMoveConfig.Scroll();     }     AdMoveConfig.Scroll = function () {         var winscroll = getPageScroll();         AdMoveConfig.ScrollX = winscroll[0];         AdMoveConfig.ScrollY = winscroll[1];     }     addEvent(window, "resize", AdMoveConfig.Resize);     addEvent(window, "scroll", AdMoveConfig.Scroll);     function AdMove(id, addCloseButton) {         if (!AdMoveConfig.IsInitialized) {             AdMoveConfig.Resize();             AdMoveConfig.IsInitialized = true;         }         AdMoveConfig.AdCount++;         var obj = document.getElementById(id);         obj.style.position = "absolute";         var W = AdMoveConfig.MoveWidth - obj.offsetWidth;         var H = AdMoveConfig.MoveHeight - obj.offsetHeight;         var x = W * Math.random(), y = H * Math.random();         var rad = (Math.random() + 1) * Math.PI / 6;         var kx = Math.sin(rad), ky = Math.cos(rad);         var dirx = (Math.random() < 0.5 ? 1 : -1), diry = (Math.random() < 0.5 ? 1 : -1);         var step = 1;         var interval;         if (addCloseButton) {             var closebtn = document.createElement("div");             obj.appendChild(closebtn);              closebtn.onclick = function () {                 obj.style.display = "none";                 clearInterval(interval);                 closebtn.onclick = null;                 obj.onmouseover = null;                 obj.onmouseout = null;                 obj.MoveHandler = null;                 AdMoveConfig.AdCount--;                 if (AdMoveConfig.AdCount <= 0) {                     removeEvent(window, "resize", AdMoveConfig.Resize);                     removeEvent(window, "scroll", AdMoveConfig.Scroll);                     AdMoveConfig.Resize = null;                     AdMoveConfig.Scroll = null;                     AdMoveConfig = null;                 }             }         }         obj.MoveHandler = function () {             obj.style.left = (x + AdMoveConfig.ScrollX) + "px";             obj.style.top = (y + AdMoveConfig.ScrollY) + "px";             rad = (Math.random() + 1) * Math.PI / 6;             W = AdMoveConfig.MoveWidth - obj.offsetWidth;             H = AdMoveConfig.MoveHeight - obj.offsetHeight;             x = x + step * kx * dirx;             if (x < 0) { dirx = 1; x = 0; kx = Math.sin(rad); ky = Math.cos(rad); }             if (x > W) { dirx = -1; x = W; kx = Math.sin(rad); ky = Math.cos(rad); }             y = y + step * ky * diry;             if (y < 0) { diry = 1; y = 0; kx = Math.sin(rad); ky = Math.cos(rad); }             if (y > H) { diry = -1; y = H; kx = Math.sin(rad); ky = Math.cos(rad); }         }         this.SetLocation = function (vx, vy) { x = vx; y = vy; }         this.SetDirection = function (vx, vy) { dirx = vx; diry = vy; }         this.Run = function () {             var delay = 10;             interval = setInterval(obj.MoveHandler, delay);             obj.onmouseover = function () { clearInterval(interval); }             obj.onmouseout = function () { interval = setInterval(obj.MoveHandler, delay); }         }     }     //--> </script> <script type="text/javascript">     $(function() {         $("#close").click(function() {             $("#main").hide();         });     })     var ad1 = new AdMove("main", true);     ad1.Run(); </script>

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javascript代码实现 随机漂浮的广告图片 代码实例

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