js随机漂浮的广告图片效果代码

<!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>

内容版权声明:除非注明,否则皆为本站原创文章。

转载注明出处:http://www.duanlonglong.com/qdjy/252.html