jQuery实现公告文字左右滚动的实例代码

时间:2020-05-13 人气:0

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>jQuery公告文字左右滚动效果-www.qb5200.com</title>
<style type="text/css">
#scrollText {
    width: 400px;
    margin-right: auto;
    margin-left: auto;
}
</style>
</head>
<script type="text/javascript" src="/source/js/jquery-1.6.2.min.js"></script>
<script type="text/javascript">
var ScrollTime;
function ScrollAutoPlay(contID,scrolldir,showwidth,textwidth,steper){
    var PosInit,currPos;
    with($('#'+contID)){
        currPos = parseInt(css('margin-left'));
        if(scrolldir=='left'){
            if(currPos<0 && Math.abs(currPos)>textwidth){
                css('margin-left',showwidth);
            }
            else{
                css('margin-left',currPos-steper);
            }
        }
        else{
            if(currPos>showwidth){
                css('margin-left',(0-textwidth));
            }
            else{
                css('margin-left',currPos-steper);
            }
        }
    }
}

//--------------------------------------------左右滚动效果----------------------------------------------
/*
AppendToObj：        显示位置（目标对象）
ShowHeight：        显示高度
ShowWidth：        显示宽度
ShowText：        显示信息
ScrollDirection：    滚动方向（值：left、right）
Steper：        每次移动的间距（单位：px；数值越小，滚动越流畅，建议设置为1px）
Interval:        每次执行运动的时间间隔（单位：毫秒；数值越小，运动越快）
*/
function ScrollText(AppendToObj,ShowHeight,ShowWidth,ShowText,ScrollDirection,Steper,Interval){
    var TextWidth,PosInit,PosSteper;
    with(AppendToObj){
        html('');
        css('overflow','hidden');
        css('height',ShowHeight+'px');
        css('line-height',ShowHeight+'px');
        css('width',ShowWidth);
    }
    if (ScrollDirection=='left'){
        PosInit = ShowWidth;
        PosSteper = Steper;
    }
    else{
        PosSteper = 0 - Steper;
    }
    if(Steper<1 || Steper>ShowWidth){Steper = 1}//每次移动间距超出限制(单位:px)
    if(Interval<1){Interval = 10}//每次移动的时间间隔（单位：毫秒）
    var Container = $('<div></div>');
    var ContainerID = 'ContainerTemp';
    var i = 0;
    while($('#'+ContainerID).length>0){
        ContainerID = ContainerID + '_' + i;
        i++;
    }
    with(Container){
      attr('id',ContainerID);
      css('float','left');
      css('cursor','default');
      appendTo(AppendToObj);
      html(ShowText);
      TextWidth = width();
      if(isNaN(PosInit)){PosInit = 0 - TextWidth;}
      css('margin-left',PosInit);
      mouseover(function(){
          clearInterval(ScrollTime);
      });
      mouseout(function(){
          ScrollTime = setInterval("ScrollAutoPlay('"+ContainerID+"','"+ScrollDirection+"',"+ShowWidth+','+TextWidth+","+PosSteper+")",Interval);
      });
    }
    ScrollTime = setInterval("ScrollAutoPlay('"+ContainerID+"','"+ScrollDirection+"',"+ShowWidth+','+TextWidth+","+PosSteper+")",Interval);
}
</script>
<script type="text/javascript">
$(document).ready(function(e) {
    ScrollText($('#scrollText'),23,400,'欢迎光临！','left',1,20);//滚动字幕
});
</script>
<body>
<div id="scrollText"></div>
<script type="text/javascript">
if(document.getElementById('GoogleAD')!=null){
    document.getElementById('GoogleAD').innerHTML = '<div class="SearchEngine_AD1">' + document.getElementById('GoogleADCode').innerHTML + '</div>';
}
</script>
</body>
</html>

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