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jQuery实现公告文字左右滚动的实例代码

程序员文章站 2024-02-18 08:09:10
代码如下:

代码如下:


<!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.jb51.net</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 = $('<p></p>');
    var containerid = 'containertemp';
    var i = 0;
    while($('#'+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);
      mouver(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,'欢迎光临脚本之家!','left',1,20);//滚动字幕
});
</script>
<body>
<p id="scrolltext"></p>
<script type="text/javascript">
if(document.getelementbyid('googlead')!=null){
    document.getelementbyid('googlead').innerhtml = '<p class="searchengine_ad1">' + document.getelementbyid('googleadcode').innerhtml + '</p>';
}
</script>
</body>
</html>