<head>
<meta charset="UTF-8">
<title>js</title>
<script type="text/javascript">
function checkUser(){
var username= document.getElementById("username").value;
var password=document.getElementById("password").value;
alert(username+"=="+password);
}
</script>
</head>
<body>
<form action="" method="post" onsubmit="retrun checkUser();">
<input type="text" name="username" id="username" placeholder="用户名"/>
<input type="password" id="password" name="password"/>
<input type="submit" name="submit" value="confirm"/>
</form>
</body>
谢谢大家😭😭😭
<head>
<meta charset="UTF-8">
<title>js</title>
<script type="text/javascript">
function checkUser() {
var username = document.getElementById("username").value;
var password = document.getElementById("password").value;
alert(username + "==" + password);
}
</script>
</head>
<body>
<form action="" method="post" onsubmit="checkUser()">
<input type="text" name="username" id="username" placeholder="用户名" />
<input type="password" id="password" name="password" /> <input
type="submit" name="submit" value="confirm" />
</form>
</body>
<head>
<meta charset="UTF-8">
<title>js</title>
<script type="text/javascript">
function checkUser() {
var username = document.getElementById("username").value;
var password = document.getElementById("password").value;
alert(username + "==" + password);
}
</script>
</head>
<body>
<form action="" method="post" onsubmit="checkUser();">
<input type="text" name="username" id="username" placeholder="用户名" />
<input type="password" id="password" name="password" /> <input
type="submit" name="submit" value="confirm" />
</form>
</body>