我正在尝试显示一个名为欢迎用户和我输入的此用户的警报 这是我的代码
<html>
<head>
<title>First Page A1 </title>
<link type="text/css" rel="stylesheet" href="text.css">
<script type="text/javascript" src = "game.js"></script>
</head>
<body >
<div id="container">
<h1>
Khokha Game
</h1>
<div id="formContent">
<form id="myform" action="game.html" method="get" >
<table>
<tr>
<td>Your Name</td>
<td><input type="text" id="username" name="username"></td>
</tr>
<tr>
<td>Difficulty</td>
<td>
<select id="difficulty" name="difficylty">
<option value="1">Easy</option>
<option value="2">Medium</option>
<option value="3">Difficult</option>
</select></td>
</tr>
<tr>
<td><input type="submit" id="submit" value="Start" onclick="checkCookie()"></td>
</tr>
</table>
</form>
</div>
</div>
</body>
<script>
function setCookie(cname,cvalue,exdays) {
var d = new Date();
d.setTime(d.getTime() + (exdays*24*60*60*1000));
var expires = "expires=" + d.toGMTString();
document.cookie = cname+"="+cvalue+"; "+expires;
}
function getCookie(cname) {
var name = cname + "=";
var ca = document.cookie.split(';');
for(var i=0; i<ca.length; i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1);
if (c.indexOf(name) == 0) {
return c.substring(name.length, c.length);
}
}
return " ";
}
function checkCookie() {
var user=getCookie("username");
if (user != "") {
alert("Welcome again " + user);
} else {
user = document.getElementById("username");
//alert(user);
if (user != "" && user != null) {
setCookie("username", user, 1);
}
}
}
</script>
</html>
但是会发生什么是cookie没有存储用户的价值而且我不知道为什么..任何帮助？ 我不能很好地