我想出瞭如何做到這一點:首先html文件必須在服務器中打開。我已經配置了apache,所以我用localhost打開文件。然後代碼:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script type="text/javascript" src="../javaframeworks/jquery-1.11.2.min.js"></script>
<script type="text/javascript" src="../javaframeworks/jquery-cookie/src/jquery.cookie.js"></script>
<link rel="stylesheet" type="text/css" href="../css/shadowbox.css" />
<script type="text/javascript">
if ($.cookie('backdrop')==null){
$(document).ready(function(){
$('.backdrop, .box').animate({'opacity':' 0.85'}, 250, "linear");
$('.box').animate({'opacity':' 1.00'}, 250, "linear");
$('.backdrop , .box').css('display', 'block');
$('.close').click(function(){
close_box();
});
$('.backdrop').click(function(){
close_box();
});
});
$.cookie('backdrop','1');
}
function close_box(){
$('backdrop, .box').animate({'opacity':'0'},250, 'linear',function(){
$('.backdrop , .box').css('display', 'none');
});
}
</script>
</head>
<body>
<div class="backdrop"></div>
<div class="box">
<div class="close"><img src="../img/big_close.png"></div>
<div class="contentbox">
<img src="../img/warning.jpg" id="aviso">
<h4 id="msg"> Está página está em fase de desenvolvimento</h4>
</div>
</div>
</body>
</html>
此代碼的目標是在頁面內容前面顯示帶有消息的div並放入opact背景。但只有用戶第一次打開該頁面。