. 代碼如下:
<head>
<title>test count down button</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
$('#btn').click(function () {
var count = 3;
var countdown = setInterval(CountDown, 1000);
function CountDown() {
$("#btn").attr("disabled", true);
$("#btn").val("Please wait " + count + " seconds!");
if (count == 0) {
$("#btn").val("Submit").removeAttr("disabled");
clearInterval(countdown);
}
count--;
}
})
});
</script>
</head>
<body>
<input type="button" id="btn" value="Submit" />
</body>
有興趣您可以自己實現一下。