<input type="button" id="submit" value="提交">
<script>$(document).ready(function(){
$("#submit").click(function(){
var nowTime = new Date().getTime();
var clickTime = $(this).attr("ctime");
if( clickTime != \'undefined\' && (nowTime - clickTime < 5000)){
alert(\'操作过于频繁，稍后再试\');
return false;
}else{
$(this).attr("ctime",nowTime);
alert(\'提交成功\');
}
});
});
</script>