<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
</head>
<body>
<form action="">
<input type="submit" id="d1">
<span style="color: red"></span>
</form>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
</head>
<body>
<form action="">
<input type="submit" id="d1">
<span style="color: red"></span>
</form>
<script>
$('#d1').click(function (e) {
$('span').text('你好啊');
// 阻止标签后续事件的运行
// return false
e.preventDefault() //
})
</script>
</body>
</html>
$('#d1').click(function (e) {
$('span').text('你好啊');
// 阻止标签后续事件的运行
// return false
e.preventDefault() //
})
</script>
</body>
</html>