根据cookie来判断,只能投票一次,下面贴上代码:

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<html>
<head>
<title>test</title>

<script type="text/javascript" src="jquery-132min2.js" ></script>
<script type="text/javascript" src="Jquery-cookie.js" ></script>

<script type="text/javascript">
document.oncontextmenu = function() {
return false;
}
$(document).ready(function() {
if (document.cookie & amp; & amp; document.cookie != '') {
var cookies = document.cookie.split(';');
for (var i = 0; i < cookies.length; i++) {
var cookie = jQuery.trim(cookies[i]);
var id = cookie.substring(cookie.indexOf('=') + 1);
$("#vote-up-" + id).attr("disabled", "disabled");
$("#vote-dn-" + id).attr("disabled", "disabled");
}
}
});

function votes(id, num) {
var cookieName = $.cookie('isClick' + id);
if (cookieName == id) return;
var posscore = parseInt($('#up-' + id).text()),
negscore = parseInt($('#dn-' + id).text()),
d = (num > 0 ? 'up' : 'dn');
num > 0 ? posscore++ : negscore--;
var val = 0;
if (num > 0)
val = posscore;
else
val = negscore;
$("#" + d + "-" + id).html(val);
showAnimation(d + '-' + id, num);
// $("#vote-up-"+id).removeClass("");
// $("#vote-up-"+id).addClass("");
// $("#vote-dn-"+id).removeClass("");
// $("#vote-dn-"+id).addClass("");
$("#vote-up-" + id).attr("disabled", "disabled");
$("#vote-dn-" + id).attr("disabled", "disabled");
$.cookie('isClick' + id, id);
}

function showAnimation(containerId, actionValue) {
var obj = $('#' + containerId),
pos = obj.offset(),
ani = $('<div id="vote-ani" style="font-size:24px;z-index:1000;">' + (actionValue > 0 ? "+1" : "-1") + "</div>");
ani.appendTo('body');
$("#vote-ani").css({
top: pos.top + 10,
left: pos.left + 10,
display: 'block',
position: 'absolute'
});
$("#vote-ani").animate({
opacity: 0,
left: "-=10px",
top: "-=10px"
}, 500, 'linear', function() {
ani.remove()
});
}

</script>

</head>
<body>
<div class="bar clearfix" id="qiushi_counts_4283026">
<div class="up" id="vote-up-4282280">
<a href="javascript:votes(4282280,1)" id="up-4282280">1574 </a>
</div>
<div class="down" id="vote-dn-4282280">
<a href="javascript:votes(4282280,-1)" id="dn-4282280">-55 </a>
</div>
</div><br />
<div class="bar clearfix" id="Div1">
<div class="up" id="vote-up-4282281">
<a href="javascript:votes(4282281,1)" id="up-4282281">11 </a>
</div>
<div class="down" id="vote-dn-4282281">
<a href="javascript:votes(4282281,-1)" id="dn-4282281">-11 </a>
</div>
</div>
</body>
</html>

&nbsp;