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关于网站建设之JS特效:定时滚动

文章来源:www.cntonet.com 发布日期:2015-01-05

以下是关于实现定时滚动效果的网站代码,希望供大家学习参考。

<!--正文部分-->

<div id="dbox" style="width:100%;height:200px;overflow:hidden;">滚动内容</div>


<!--JS部分-->

<script language="javascript">
window.onload=function(){
  new Marquee(
    "dbox",  //容器ID
    0,  //向上滚动(0为向上、1为向下、2为向左、3为向右)
    2,  //滚动的步长
    1004,  //容器可视宽度
    330,  //容器可视高度
    10,  //定时器 数值越小,滚动的速度越快(1000=1秒,建议不小于20)
    5000,  //间歇停顿时间(0为不停顿,1000=1秒)
    5000,  //开始时的等待时间(0为不等待,1000=1秒)
    330  //间歇滚动间距(可选)
    );
  };
function Marquee(){
  this.ID=document.getElementById(arguments[0]);
  this.Direction=arguments[1];
  this.Step=arguments[2];
  this.Width=arguments[3];
  this.Height=arguments[4];
  this.Timer=arguments[5];
  this.WaitTime=arguments[6];
  this.StopTime=arguments[7];
  if(arguments[8]){this.ScrollStep=arguments[8];}else{this.ScrollStep=this.Direction>1?this.Width:this.Height;}
  this.CTL=this.StartID=this.Stop=this.MouseOver=0;
  this.ID.style.overflowX=this.ID.style.overflowY="hidden";
  this.ID.noWrap=true;
  this.ID.style.width=this.Width;
  this.ID.style.height=this.Height;
  this.ClientScroll=this.Direction>1?this.ID.scrollWidth:this.ID.scrollHeight;
  this.ID.innerHTML+=this.ID.innerHTML;
  this.Start(this,this.Timer,this.WaitTime,this.StopTime);
  }
Marquee.prototype.Start=function(msobj,timer,waittime,stoptime){
  msobj.StartID=function(){msobj.Scroll();}
  msobj.Continue=function(){
    if(msobj.MouseOver==1){setTimeout(msobj.Continue,waittime);}
    else{clearInterval(msobj.TimerID); msobj.CTL=msobj.Stop=0; msobj.TimerID=setInterval(msobj.StartID,timer);}
    }
  msobj.Pause=function(){msobj.Stop=1; clearInterval(msobj.TimerID); setTimeout(msobj.Continue,waittime);}
  msobj.Begin=function(){
    msobj.TimerID=setInterval(msobj.StartID,timer);
    msobj.ID.onmouseover=function(){msobj.MouseOver=1; clearInterval(msobj.TimerID);}
    msobj.ID.onmouseout=function(){msobj.MouseOver=0; if(msobj.Stop==0){clearInterval(msobj.TimerID); msobj.TimerID=setInterval(msobj.StartID,timer);}}
    }
  setTimeout(msobj.Begin,stoptime);
  }
Marquee.prototype.Scroll=function(){
  switch(this.Direction){
    case 0:
      this.CTL+=this.Step;
      if(this.CTL>=this.ScrollStep&&this.WaitTime>0){this.ID.scrollTop+=this.ScrollStep+this.Step-this.CTL; this.Pause(); return;}
      else{if(this.ID.scrollTop>=this.ClientScroll) this.ID.scrollTop-=this.ClientScroll; this.ID.scrollTop+=this.Step;}
      break;
    case 1:
      this.CTL+=this.Step;
      if(this.CTL>=this.ScrollStep&&this.WaitTime>0){this.ID.scrollTop-=this.ScrollStep+this.Step-this.CTL; this.Pause(); return;}
      else{if(this.ID.scrollTop<=0) this.ID.scrollTop+=this.ClientScroll; this.ID.scrollTop-=this.Step;}
      break;
    case 2:
      this.CTL+=this.Step;
      if(this.CTL>=this.ScrollStep&&this.WaitTime>0){this.ID.scrollLeft+=this.ScrollStep+this.Step-this.CTL; this.Pause(); return;}
      else{if(this.ID.scrollLeft>=this.ClientScroll) this.ID.scrollLeft-=this.ClientScroll; this.ID.scrollLeft+=this.Step;}
      break;
    case 3:
      this.CTL+=this.Step;
      if(this.CTL>=this.ScrollStep&&this.WaitTime>0){this.ID.scrollLeft-=this.ScrollStep+this.Step-this.CTL; this.Pause(); return;}
      else{if(this.ID.scrollLeft<=0) this.ID.scrollLeft+=this.ClientScroll; this.ID.scrollLeft-=this.Step;}
      break;
    }
  }
</script>


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