1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> 5 <title>抽奖</title> 6 <script type="text/javascript"> 7 var alldata = "a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z"2020-06-04 8 var alldataarr = alldata.split(","); 9 var num = alldataarr.length - 1; 10 var timer; 11 function start() { 12 clearInterval(timer);h 13 timer = setInterval(‘change()‘, 10); 14 } 15 function change() { 16 document.getElementById("oknum").innerHTML = alldataarr[GetRnd(0, num)]; 17 } 18 function GetRnd(min, max) { 19 return parseInt(Math.random() * (max - min + 1)); 20 } 21 function ok() { 22 clearInterval(timer); 23 document.getElementById("showresult").value = document.getElementById("oknum").innerText; 24 } 25 </script> 26 </head> 27 <body> 28 29 <div id="oknum" name="oknum" >请单击开始</div> 30 <button onclick="start()" accesskey="s">开始</button> <!--//accesskey 属性规定激活（使元素获得焦点）元素的快捷键。--> 31 <button onclick="ok()" accesskey="o">停止</button> 32 您的选择是： 33 <input type="text" id="showresult" value=""/> 34 </body> 35 </html>
原文：https://www.cnblogs.com/zxa2020/p/13042108.html