版权声明：本文为郝云原创文章，未经郝云允许不得转载。 https://blog.csdn.net/haoyunyun888/article/details/51459589
课堂点名表
<meta charset="utf-8">
<html>
<title>点名表</title>
<fieldset style="color: blue">
<legend><h2>班级点名表</h2></legend>
<h1>点名表</h1>
<h3><textarea id="student"></textarea></h3>
<input type="button" onclick="fun1();" value="点击" id="one">
</fieldset>
</html>
<script>
//点名表
document.bgColor='green';
function fun2(){
var arr=Array('');
var num=parseInt(Math.random()*arr.length);
document.getElementById('student').innerHTML=arr[num];
}
function fun1(){
if(document.getElementById('one').value=='开始'){
document.getElementById('one').value='停止';
a=setInterval("fun2();",10)
}else{
document.getElementById('one').value='开始';
clearInterval(a);
}
}
</script>