<html>
<head>
<script>
functiondisableButton(){
if(newDate().getHours() == 18){
document.getElementById("button").setAttribute("disabled","disabled");
}
}
window.onload=function(){setInterval(disableButton,1000);}
</script>
</head>
<body>
<inputtype="button" id="button" value="18点失效"/>
</body>
</html>
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<!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>
<title>表单提交后按钮变灰代码</title>
<metahttp-equiv="content-type"content="text/html;charset=gb2312">
</head>
<body>
<scriptlanguage="javascript">
function my_submit(){
document.form1.submit();
document.form1.submit1.disabled=true;
}
</script>
<form action="/"method="post" name="form1">
<input type="text"name="name">
<input type="button"name="submit1" value="提交" onClick="javascript:my_submit();">
</form>
</body>
</html>