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[JS] 页面漂浮广告,兼容IE

发布者:站点默认
2013/07/4 浏览数(7,068) 分类:工作 [JS] 页面漂浮广告,兼容IE已关闭评论

效果:

多广告不冲突、随滚动条移动(一直显示在可视区域)。

demo_float_js

floatAD.js

/**
 * 漂浮广告,兼容IE
 * 用法:<div id="gg1" style="width:100px;height:100px;background-color:red;color:yellow"> 广告1 </div>
 *    <script type="text/javascript">var ad1=new AdMove("gg1");ad1.Run();</script>
 * 整理:13:12 2013年7月4日 星期四
 */
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 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.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){
	if(!AdMoveConfig.IsInitialized){
		AdMoveConfig.Resize();
		AdMoveConfig.IsInitialized=true;
	}
	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;
	this.SetLocation=function(vx,vy){
		x=vx;
		y=vy;
	}
	this.SetDirection=function(vx,vy){
		dirx=vx;
		diry=vy;
	}
	obj.CustomMethod=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.Run=function(){
		var delay = 10;
		interval=setInterval(obj.CustomMethod,delay);
		obj.onmouseover=function(){
			clearInterval(interval);
		}
		obj.onmouseout=function(){
			interval=setInterval(obj.CustomMethod, delay);
		}
	}
}
// end 13:11 2013年7月4日 星期四

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