用JavaScript实现上下文字滚动特效

　　文字左右滚动的走马灯 动机是一种十分方便实现的特效，同样的，文字上下滚动循环显示也是一种非 一般见并且十分方便实现的文字特效 。

　　具体实现 步骤如下：

<script language=JavaScript><p>var messages=new Array()</P><div class="tj_content hidden-xs"><table width=600 border=0 cellspacing=0 cellpadding=2 align=center class=title14><tr align=center><td><a href="http://www.zhujiangroad.com/dc/news/2021/10m84084.html" target=_blank > 黄牛盯上索尼A7M4微单：16999元瞬间被抢光 涌入闲鱼 </a></td><td><a href="http://www.zhujiangroad.com/videocard/news/2021/10m83968.html" target=_blank > NVIDIA LHR显卡挖矿限制被破解：方法很简单 </a></td></tr> <tr align=center><td><a href="http://www.zhujiangroad.com/videocard/news/2019/10a17405.html" target=_blank > 显卡设置对了，游戏才能更顺畅 </a></td><td><a href="http://www.zhujiangroad.com/web/news/2020/10m82103.html" target=_blank > 花呗“提前还”和“按时还”，到底有啥区别？支付宝员工给出答案 </a></td></tr></table></div><p>messages[0]="<font color=#8000FF> 欢送 光临赛迪网电脑 利用频道！</font></a>"</P><p>messages[1]="<font color=#FB2500>这里有织网梦工厂</font></a>"</P><p>messages[2]="<font color=#FF0066F>是网页初学者的学习园地</font></a>"</P><p>messages[3]="<font color=#FF9900>这里冲浪指南针</font></a>"</P><p>messages[4]="<font color=#00CC33>是网络 爱好者每天必来充电的地方</font></a>"</P><div class="tj_content hidden-xs"><table width=600 border=0 cellspacing=0 cellpadding=2 align=center class=title14><tr align=center><td><a href="http://www.zhujiangroad.com/dc/news/2021/6m83324.html" target=_blank > 松下会同奥林巴斯一样放弃摄影产业吗？ </a></td><td><a href="http://www.zhujiangroad.com/hardware/news/2022/1a17581.html" target=_blank > 你们都是托：买了SSD就能10秒开机？ </a></td></tr> <tr align=center><td><a href="http://www.zhujiangroad.com/web/news/2024/1m89221.html" target=_blank > 抖音首播王者荣耀 字节和腾讯世纪和解 </a></td><td><a href="http://www.zhujiangroad.com/software/news/2021/11m84141.html" target=_blank > 非常实用的电脑快捷键 喜欢赶紧收藏 </a></td></tr></table></div><p>messages[5]="<font color=#000000>这里有…………有精彩的内容等着你</font></a>"</P><p>var scrollerwidth=320</P><p>var scrollerheight=100</P><p>var scrollerbgcolor=´#FFFFFF´</P><p>//下面的代码不要 改变</P><div class="tj_content hidden-xs"><table width=600 border=0 cellspacing=0 cellpadding=2 align=center class=title14><tr align=center><td><a href="http://www.zhujiangroad.com/software/news/2021/6m83334.html" target=_blank > Win10竟会损坏用户文件！教你解决这个Bug </a></td><td><a href="http://www.zhujiangroad.com/software/news/2020/3m81310.html" target=_blank > 微信重磅推出三大功能，马化腾终结停机时代！ </a></td></tr> <tr align=center><td><a href="http://www.zhujiangroad.com/software/news/2021/11m84141.html" target=_blank > 非常实用的电脑快捷键 喜欢赶紧收藏 </a></td><td><a href="http://www.zhujiangroad.com/mobile/news/2020/10m82134.html" target=_blank > 口口声声要抵制苹果，iPhone12却已无货，身体比言语诚实 </a></td></tr></table></div><p>if (messages.length>1)</P><p>i=2</P><p>else</P><p>i=0</P><p>function move1(whichlayer){</P><p>tlayer=eval(whichlayer)</P><div class="tj_content hidden-xs"><table width=600 border=0 cellspacing=0 cellpadding=2 align=center class=title14><tr align=center><td><a href="http://www.zhujiangroad.com/oa/news/2021/10a17553.html" target=_blank > 装机30分返工2小时？不能错过的三大技巧 </a></td><td><a href="http://www.zhujiangroad.com/web/news/2021/11m84125.html" target=_blank > 每天1万人取关！鸿星尔克留不住“野性消费者” </a></td></tr> <tr align=center><td><a href="http://www.zhujiangroad.com/mobile/news/2021/1m82708.html" target=_blank > 男子17年花200万收藏万部手机：让大家了解手机发展史 </a></td><td><a href="http://www.zhujiangroad.com/home/news/2021/2m82793.html" target=_blank > 记住这几个关键词 2021年买电视就看它们了 </a></td></tr></table></div><p>if (tlayer.top>0&&tlayer.top<=5){</P><p>tlayer.top=0</P><p>setTimeout("move1(tlayer)",3000)</P><p>setTimeout("move2(document.main.document.second)",3000)</P><p>return}</P><p>if (tlayer.top>=tlayer.document.height*-1){</P><p>tlayer.top-=5</P><p>setTimeout("move1(tlayer)",100)}</P><p>else{</P><p>tlayer.top=scrollerheight</P><p>tlayer.document.write(messages[i])</P><p>tlayer.document.close()</P><p>if (i==messages.length-1)</P><p>i=0</P><p>else</P><p>i++}}</P><p>function move2(whichlayer){</P><p>tlayer2=eval(whichlayer)</P><p>if (tlayer2.top>0&&tlayer2.top<=5){</P><p>tlayer2.top=0</P><p>setTimeout("move2(tlayer2)",3000)</P><p>setTimeout("move1(document.main.document.first)",3000)</P><p>return}</P><p>if (tlayer2.top>=tlayer2.document.height*-1){</P><p>tlayer2.top-=5</P><p>setTimeout("move2(tlayer2)",100)}</P><p>else{</P><p>tlayer2.top=scrollerheight</P><p>tlayer2.document.write(messages[i])</P><p>tlayer2.document.close()</P><p>if (i==messages.length-1)</P><p>i=0</P><p>else</P><p>i++}}</P><p>function move3(whichdiv){</P><p>tdiv=eval(whichdiv)</P><p>if (tdiv.style.pixelTop>0&&tdiv.style.pixelTop<=5){</P><p>tdiv.style.pixelTop=0</P><p>setTimeout("move3(tdiv)",3000)</P><p>setTimeout("move4(second2)",3000)</P><p>return}</P><p>if (tdiv.style.pixelTop>=tdiv.offsetHeight*-1){</P><p>tdiv.style.pixelTop-=5</P><p>setTimeout("move3(tdiv)",100)}</P><p>else{</P><p>tdiv.style.pixelTop=scrollerheight</P><p>tdiv.innerHTML=messages[i]</P><p>if (i==messages.length-1)</P><p>i=0</P><p>else</P><p>i++}}</P><p>function move4(whichdiv){</P><p>tdiv2=eval(whichdiv)</P><p>if (tdiv2.style.pixelTop>0&&tdiv2.style.pixelTop<=5){</P><p>tdiv2.style.pixelTop=0</P><p>setTimeout("move4(tdiv2)",3000)</P><p>setTimeout("move3(first2)",3000)</P><p>return}</P><p>if (tdiv2.style.pixelTop>=tdiv2.offsetHeight*-1){</P><p>tdiv2.style.pixelTop-=5</P><p>setTimeout("move4(second2)",100)}</P><p>else{</P><p>tdiv2.style.pixelTop=scrollerheight</P><p>tdiv2.innerHTML=messages[i]</P><p>if (i==messages.length-1)</P><p>i=0</P><p>else</P><p>i++}}</P><p>function startscroll(){</P><p>if (document.all){</P><p>move3(first2)</P><p>second2.style.top=scrollerheight}</P><p>else if (document.layers){</P><p>move1(document.main.document.first)</P><p>document.main.document.second.top=scrollerheight+5</P><p>document.main.document.second.visibility=´show´}}</P><p>window.onload=startscroll</P><p></script></P><p><ilayer id="main" width=&{scrollerwidth}; height=&{scrollerheight};</P><p>bgcolor=&{scrollerbgcolor};></P><p><layer id="first" left=0 top=1 width=&{scrollerwidth};></P><p><script language="JavaScript1.2"></P><p>if (document.layers)</P><p>document.write(messages[0])</P><p></script></P><p></layer></P><p><layer id="second" left=0 top=0 width=&{scrollerwidth}; visibility=hide></P><p><script language="JavaScript1.2"></P><p>if (document.layers)</P><p>document.write(messages[1])</P><p></script></P><p></layer></P><p></ilayer></P><p><script language="JavaScript1.2"></P><p>if (document.all){</P><p>document.writeln(´<span id="main2" style="position:relative;width:´+scrollerwidth+´;height:´</P><p>+scrollerheight+´;overflow:hiden;background-color:´+scrollerbgcolor+´">´)</P><p>document.writeln(´<div style="position:absolute;width:´+scrollerwidth+´;height:´</P><p>+scrollerheight+´;clip:rect(0 ´+scrollerwidth+´ ´</P><p>+scrollerheight+´ 0);left:0;top:0">´)</P><p>document.writeln(´<div id="first2" style="position:absolute;width:´+scrollerwidth+´;left:0;top:1;">´)</P><p>document.write(messages[0])</P><p>document.writeln(´</div>´)</P><p>document.writeln(´<div id="second2" style="position:absolute;width:´+scrollerwidth+´;left:0;top:0">´)</P><p>document.write(messages[1])</P><p>document.writeln(´</div>´)</P><p>document.writeln(´</div>´)</P><p>document.writeln(´</span>´)</P><p>}</P><p></script></P>

　　(在需求增加该特效的网页具体位置中粘贴如下代码即可)

　　 留神：代码中的“var scrollerwidth=320” 示意循环框宽度，"var scrollerheigh=100" 示意循环框高度，"font color=# "代表文字 色彩， 可以依据需求进行 批改 。