js 无缝滚动效果学习

时间：2022-04-10 04:25:58
<!DOCTYPE html>

<html>

<head>

    <title>无缝滚动测试</title>

    <meta http-equiv="Content-type" content="text/html; charset=utf-8">

    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=0">

    <meta name="apple-mobile-web-app-capable" content="yes" />

    <META HTTP-EQUIV="Pragma" CONTENT="no-cache">

    <meta http-equiv="X-UA-Compatible" content="IE=edge" />

    <script type="text/javascript" src="../dist/zepto.js"></script>

</head>

<body>

<style type="text/css">

    #ScrollContainer{

        overflow: hidden;

        width: 500px;

    }

    #Container{

        float: left;

        width: 800%;

    }

    #detail{

        float: left;

    }

    #detailview{

        float: left;

    }

</style>

<div id="ScrollContainer">

    <div id="Container">

        <div id="detail">

            <a href="#"><img src="http://www.codefans.net//jscss/demoimg/wall_s1.jpg" border="0" /></a>

            <a href="#"><img src="http://www.codefans.net//jscss/demoimg/wall_s2.jpg" border="0" /></a>

            <a href="#"><img src="http://www.codefans.net//jscss/demoimg/wall_s3.jpg" border="0" /></a>

            <a href="#"><img src="http://www.codefans.net//jscss/demoimg/wall_s4.jpg" border="0" /></a>

            <a href="#"><img src="http://www.codefans.net//jscss/demoimg/wall_s5.jpg" border="0" /></a>

            <a href="#"><img src="http://www.codefans.net//jscss/demoimg/wall_s6.jpg" border="0" /></a>

        </div>

        <div id="detailview"></div>

    </div>

</div>

<script>

    (function(Scroll,Container,detail){

        //nowmyMarquee.run();

    })("ScrollContainer","Container","detail")

    function myMarquee(Scroll,Container,detail){

        console.log(this);

        var that=this;

        this.speed=10;

        this.tabScroll=document.getElementById(Scroll);

        this.tabdetail=document.getElementById(detail);

        this.tabdetailView=document.getElementById(detail+'view');

        this.tabdetailView.innerHTML=this.tabdetail.innerHTML;

        this.Marquee=function(){

            if(this.tabdetailView.offsetWidth-this.tabScroll.scrollLeft<=0)

            {

                //一轮滚动结束需要充值

                this.tabScroll.scrollLeft-=this.tabdetail.offsetWidth;

            }

            else

            {

                this.tabScroll.scrollLeft++;

            };

        };

        this.tabdetail.onmouseover=function(){

            clearInterval(that.MyMar)

        };

        this.tabdetail.onmouseout=function(){

            that.MyMar=setInterval(

                  function(){  that.Marquee.apply(that)}

                    , that.speed);

        }

        this.run=function(){

            this.MyMar=setInterval(

                    function(){  that.Marquee.apply(that)}

                    ,   that.speed);

        }

        this.run();

    }

    var  nowmyMarquee=new myMarquee("ScrollContainer","Container","detail")

</script>

</body>

</html>

offsetWidth 和 scrollLeft 的应用 和子容器800%与父容器的使用

参考 http://blog.csdn.net/xuantian868/article/details/3116442

obj.offsetWidth 指 obj 控件自身的绝对宽度，不包括因 overflow 而未显示的部分，也就是其实际占据的宽度，整型，单位像素。

3.scrollLeft,scrollTop:

如果元素是可以滚动的,可以通过这俩个属性得到元素在水平和垂直方向上滚动了多远,单位是象素.

对于不可以滚动的元素,这些值总是0.

scrollLeft 主要用来定位子容器在父容器中的定位，控制子容器的位置

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