案例要求
1.点击点名按钮，名字界面随机显示，按钮文字由点名变为停止
2.再次点击点名按钮，显示当前被点名学生姓名，按钮文字由停止变为点名
案例源码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Random Student Picker</title>
<style>
body {
font-family: Arial, sans-serif;
background-color: #f4f4f4;
margin: 0;
padding: 0;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
}
.container {
text-align: center;
}
#nameDisplay {
font-size: 24px;
margin-bottom: 20px;
}
#toggleButton {
background-color: #007bff;
color: #fff;
border: none;
padding: 10px 20px;
cursor: pointer;
}
</style>
</head>
<body>
<div class="container">
<div id="nameDisplay"></div>
<button id="toggleButton">点名</button>
</div>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script>
$(document).ready(function() {
var students = ["小明", "小红", "小李", "小张", "小王", "小刚", "小花", "小美", "小华", "小军", "小强", "小丽", "小明", "小红", "小李", "小张", "小王", "小刚", "小花", "小美", "小华", "小军", "小强", "小丽"];
var interval;
var isPicking = false;
$('#toggleButton').click(function() {
if (isPicking) {
clearInterval(interval);
isPicking = false;
$(this).text('点名');
} else {
isPicking = true;
$(this).text('停止');
interval = setInterval(function() {
var randomIndex = Math.floor(Math.random() * students.length);
$('#nameDisplay').text(students[randomIndex]);
}, 100);
}
});
});
</script>
</body>
</html>
