我这有一段代码：涉及代码安全性，无论输入什么（功能键除外）都显示“*”号，只有当刷新页面时，才能清空内容，当然，可以设置显示样式。问题是我想获得这个层中的值，我试了用隐藏域获取，可是没有效果。所以请大家帮忙看看，有没有好的方法。代码如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>
<script>
function document.onkeydown()
{
document.getElementById("tt").innerText+="*";
return false;
}
</script>
<body>
<div id="tt" style="border-top:#333 2px solid; border-left:#333 2px solid; border-bottom:#cdcdcd 1px solid; border-right:#cdcdcd 1px solid; width:300px; height:23px; cursor:text;"></div>
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>
<script>
function document.onkeydown()
{
document.getElementById("tt").innerText+="*";
return false;
}
</script>
<body>
<div id="tt" style="border-top:#333 2px solid; border-left:#333 2px solid; border-bottom:#cdcdcd 1px solid; border-right:#cdcdcd 1px solid; width:300px; height:23px; cursor:text;"></div>
</body>
</html>
然后引入js文件调呗 就跟你调类一样
<script type="text/javascript" language="javascript">
function document.onkeydown() {
document.getElementById("tt").innerText += "*";
return false;
}
function getValue() {
alert(document.getElementById("tt").value);
document.getElementById("HiddenField1").value = document.getElementById("tt").value;
}
</script>
<body>
<form id="test" runat="server">
<asp:HiddenField ID="HiddenField1" runat="server" />
<div id="tt" style="border-top:#333 2px solid; border-left:#333 2px solid; border-bottom:#cdcdcd 1px solid; border-right:#cdcdcd 1px solid; width:300px; height:23px; cursor:text;"></div>
<input id="Hidden1" type="hidden" />
<input id="Button2" type="button" value="取值" onclick="getValue()"/>
</form>
</body>
这种方式不能获得啊！