//css*{margin:0;padding:0;}.main{width: 400px;padding:20px;}ul{width: 400px;overflow: hidden;}ul li{width: 30px;line-height: 30px;border-radius: 50%;text-align: center;background: #ededed;color: #333;font-size: 16px;float: left;margin:10px;list-style: none;cursor: pointer;}ul li.on{background: #f40 !important;color: #fff !important;}.tools{overflow: hidden;}.tools select{float: left;width: 100px;text-align: center;vertical-align: middle;margin-left:200px;line-height: 32px;height: 32px;}.btn{float: right;display: block;width: 80px;color: #fff;color:#f40;line-height: 32px;border-radius: 4px;border:1px solid #f40;font-size: 14px;text-align: center;cursor: pointer;} //dom
随机选号
//jswindow.onload=function(){ var ul=document.getElementsByClassName('number1')[0]; for (var i = 1; i <34; i++) { var li=document.createElement("li"); if(i<10){ li.innerHTML='0'+i; }else if(i>=10){ li.innerHTML=i; } ul.appendChild(li); } var li = ul.getElementsByTagName('li'); var counts=document.getElementsByClassName('select')[0]; var val =counts.value; counts.onchange=function(){ val=this.value; } var btn=document.getElementsByClassName('btn1'); console.log(btn); btn[0].onclick=function(){ var arr=[]; for(var i=0;arr.length