怎么给datalist设定滚动时间

Question

function top() {
        var speed = 40;//设置滚动速度
        demo2.innerHTML = demo1.innerHTML//复制demo1为demo2        function Marquee() {
            if (demo1.offsetWidth - demo.scrollLeft <= 0)//当滚动至demo1与demo2交界时
                demo.scrollTop = 0  //demo跳到最左端
            else
                demo.scrollTop++
        }
}求教！JS

Answer 1

里面加个定时器，setTim<div id="colee" style="overflow:hidden;height:253px;width:410px;"><div id="colee1"><p><img src="/jscss/demoimg/200907/bg3.jpg"></p><p><img src="/jscss/demoimg/200907/bg3.jpg"></p><p><img src="/jscss/demoimg/200907/bg3.jpg"></p><p><img src="/jscss/demoimg/200907/bg3.jpg"></p><p><img src="/jscss/demoimg/200907/bg3.jpg"></p><p><img src="/jscss/demoimg/200907/bg3.jpg"></p></div><div id="colee2"></div></div><script>var speed=30;var colee2=document.getElementById("colee2");var colee1=document.getElementById("colee1");var colee=document.getElementById("colee");colee2.innerHTML=colee1.innerHTML; //克隆colee1为colee2function Marquee1(){//当滚动至colee1与colee2交界时if(colee2.offsetTop-colee.scrollTop<=0){ colee.scrollTop-=colee1.offsetHeight; //colee跳到最顶端 }else{ colee.scrollTop++}}var MyMar1=setInterval(Marquee1,speed)//设置定时器//鼠标移上时清除定时器达到滚动停止的目的colee.onmouseover=function() {clearInterval(MyMar1)}//鼠标移开时重设定时器colee.onmouseout=function(){MyMar1=setInterval(Marquee1,speed)}</script>
eOut

Answer 2

我想做以一个按钮 点击按钮时datalist绑定的内容就向上翻滚2行 这样的效果 你说的那我个我没搞懂