点击按钮后跳转到php网页
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>login</title>
<script> function login(){ window.location= "2048validate.php"; } </script>
</head>
<body>
<form action="result.php" method="post">
号码: <input type="text" name="username" ><br>
密码: <input type="text" name="password" ><br>
<input type="submit" value="注册">
<button type="button" onclick="login()">登录</button>
</form>
</body>
</html>
有没有加锁，要是你们同时加会出现库存为-1吗？