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var alldataarr = alldata.split(",") var num = alldataarr.length-1 var timer function change(){ document.getElementById("oknum").value = alldataarr[GetRnd(0,num)]; }
function start(){ clearInterval(timer); timer = setInterval('change()',50); //50(毫秒)为变换间隔,越小变换的越快 }
function ok(){ clearInterval(timer); }
function GetRnd(min,max){ return parseInt(Math.random()*(max-min+1)); } </SCRIPT> 模拟抽奖:<input type="text" id="oknum" name="oknum" value=""> <button onclick="start()" accesskey="s">开始(<U>S</U>)</button> <button onclick="ok()" accesskey="o">停止(<U>O</U>)</button> </body> </html>
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