js实现随机点名小功能

本文实例为大家分享了js实现随机点名功能的具体代码,供大家参考,具体内容如下

<!DOCTYPE html>

<html>

<head>

<meta charset="UTF-8">

<title></title>

</head>

<body>

<div id="name1"></div>

<button id="btn">stop</button>

</body>

<script type="text/javascript">

var flag = true;

var str = "张三,李四,王五,马六";

var arr = str.split(",");

var interId = setInterval("randName()",100);

function randName(){

var rand = Math.floor(Math.random() * arr.length);

name1.innerHTML = arr[rand];

}

btn.onclick = function (){

if (flag) {

btn.innerHTML = "start";

clearInterval(interId);

flag = false;

} else{

btn.innerHTML = "stop";

interId = setInterval("randName()",100);

flag = true;

}

}

</script>

</html>

以上是 js实现随机点名小功能 的全部内容, 来源链接: utcz.com/z/342521.html

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