本文實例講述了JS實現簡單的文字無縫上下滾動功能。分享給大家供大家參考，具體如下：
<!DOCTYPE html><html><head> <meta charset="utf-8"> <meta name="author" content="" /> <title>文字列表無縫滾動代碼</title> <style type="text/css"> *{ margin:0px; padding:0px; border:0px; } body{font-size:12px} #demo{ overflow:hidden; height:80px; width:280px; margin:90px auto; position:relative; } #demo1{ height:auto; text-align:left; } #demo2{ height:auto; text-align:left; } #demo1 li{ list-style-type:none; height:22px; text-align:left; text-indent:15px; } #demo2 li{ list-style-type:none; height:22px; text-align:left; text-indent:15px; } </style></head><body><div id="demo"> <ul id="demo1"> <li>1</li> <li>2</li> <li>3</li> <li>4</li> <li>5</li> <li>6</li> <li>7</li> </ul> <div id="demo2"></div></div><script type="text/javascript"> var speed=40 // 向上滾動 var demo=document.getElementById("demo"); var demo2=document.getElementById("demo2"); var demo1=document.getElementById("demo1"); demo2.innerHTML=demo1.innerHTML function Marquee(){ if(demo.scrollTop>=demo1.offsetHeight){ demo.scrollTop=0; } else{ demo.scrollTop=demo.scrollTop+1; } } var MyMar=setInterval(Marquee,speed) demo.onmouseover=function(){clearInterval(MyMar)} demo.onmouseout=function(){MyMar=setInterval(Marquee,speed)} //向下滾動 // demo2.innerHTML=demo1.innerHTML // demo.scrollTop=demo.scrollHeight // function Marquee2(){ // if(demo1.offsetTop-demo.scrollTop>=0) // demo.scrollTop+=demo2.offsetHeight // else{ // demo.scrollTop-- // } // } // var MyMar2=setInterval(Marquee2,speed) // demo.onmouseover=function() {clearInterval(MyMar2)} // demo.onmouseout=function() {MyMar2=setInterval(Marquee2,speed)}</script></body></html>希望本文所述對大家JavaScript程序設計有所幫助。
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