Question

以下是HTML，CSS，Javascript和JQuery：

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>

<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>

<script type="text/javascript">

function getTarget(event){
    target = (typeof window.event === "undefined")?event.target:window.event.srcElement;
    return target;
}

document.onclick = function(event){
    var target = getTarget(event);
    if(target.id == ""){
        var overlay = document.getElementById('overlay');
        var specialBox = document.getElementById('specialBox');
        var button = document.getElementById('qualityButton');
        overlay.style.display = "none";
        specialBox.style.display = "none";
        button.style.color="#000000";
    }

}


function toggleOverlay(){
    var overlay = document.getElementById('overlay');
    var specialBox = document.getElementById('specialBox');
    var button = document.getElementById('qualityButton');
    overlay.style.opacity = .7;
    if(overlay.style.display == "block"){
        overlay.style.display = "none";
        specialBox.style.display = "none";
        button.style.color="#000000";
    } else {
        overlay.style.display = "block";
        specialBox.style.display = "block";
        button.style.color="#ff0000";
    }
}
</script>

<script>
function toggleOverlay(){  
$('#overlay, #specialBox').fadeToggle(500);
}
</script>

<style type="text/css">

div#overlay {
    display: none;
    z-index: 2;
    background: #A9A9A9;
    position: fixed;
    width: 879px;
    height: 291px;
    top: 50px;
    left: 0px;
    text-align: center;
}
div#specialBox {
    display: none;
    position: fixed;
    z-index: 3;
    width: 719px; 
    height: 215px;
    top: 88px;
    left: 80px;
    background: #FFF;
}
div#wrapper {
    position:absolute;
    top: 0px;
    left: 0px;
    padding-left: 24px;
}
</style>

<style type="text/css">
    .btn {
        cursor:pointer;
        font-size:24px;
        border:none;
        color:#000
}
    .btn:hover{ 
    color:#F00; 
    }
</style>

<style type="text/css">
    .x {
        background-color:white;
        cursor:pointer;
        font:Arial;
        font-size:14px;
        color:red;
        z-index: 4;
        position: fixed;
        top: 92px;
        left: 766px;
    }
</style>

</head>

<body>
<!-- Start Overlay -->
<div id="overlay"></div>
<!-- End Overlay -->
<!-- Start Special Centered Box -->
<div id="specialBox">
  <button class="x" onmousedown="toggleOverlay()">X</button>
</div>
<!-- Start Special Centered Box -->
<!-- Start Normal Page Content -->
<div id="wrapper">
  <button id="qualityButton" class="btn" onmousedown="toggleOverlay()">HIGHEST QUALITY</button>
</div>
<!-- End Normal Page Content -->



</div>
</body>
</html>

我无法理解两件事：

单击“质量按钮”时，叠加层会淡入。再次单击时，淡出淡出。但是，如果叠加层已打开，并且单击“X”按钮以关闭叠加层，或者如果单击网页上的任何其他位置以关闭叠加层，则没有淡入淡出效果，并且叠加层仅在闪光灯中关闭。当单击“X”按钮或网页上的任何位置时，如何实现淡入淡出效果？
如果叠加层已打开，并且用户转到另一个页面，并返回带有叠加层的页面，则叠加层仍处于打开状态...如何确保覆盖页面一直保留，如果叠加层保持打开状态，它会在返回后关闭吗？

非常感谢任何帮助。

詹姆斯

离开页面时调整叠加速度较慢+关闭叠加

0 个答案: