BurgerDialog - 使用 JavaScript 实现动画弹出对话框 - 常规

<p><!doctype html></p>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" id="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=0">
    <link rel="shortcut icon" href="favicon.png" type="image/x-icon">
    <link rel="stylesheet" type="text/css" href="waves/waves.min.css" />
    <title>BurgerDialog - Burger工具站</title>
    <style>
        * {
            font-family: sans-serif;
        }
<pre><code>    html,
    body {
        margin: 0;
    }

    .burger-dialog {
        height: 160px;
        width: 280px;
        background-color: #EDE7F6;
        z-index: -1;
        position: fixed;
        text-align: center;
        left: calc(50% - 156px);
        top: calc(50% - 96px);
        border-radius: 16px;
        box-shadow: 0 4px 32px 4px rgba(0, 0, 0, .4);
        padding: 16px;
        opacity: 0;
        display: none;
        transform: scale(.85);
        transition-property: opacity, display, transform, z-index;
        transition-duration: .5s, .5s, .5s, .5s;
    }

    @media (min-width: 1024px) {
        .burger-dialog {
            width: 640px;
            left: calc(50% - 336px);
        }
    }

    .burger-dialog-title {
        font-size: 20px;
        text-align: left;
        margin: 4px 0;
    }

    .burger-dialog-content {
        text-align: left;
        margin: 16px 0;
        color: rgba(0, 0, 0, .7);
    }

    .burger-dialog-actions {
        position: absolute;
        bottom: 16px;
        right: 16px;
        float: right;
    }

    .burger-dialog-actions button {
        border: none;
        padding: 8px 16px;
        background-color: #EDE7F6;
        color: #673AB7;
        border-radius: 16px;
        display: inline-block;
        margin: 4px 0;
        transition-property: filter;
        transition-duration: .3s;
    }

    .burger-dialog-actions button:hover {
        filter: brightness(0.8);
    }
&lt;/style&gt;
&lt;style&gt;
    .btn {
        border: none;
        padding: 8px 16px;
        background-color: #EDE7F6;
        color: #673AB7;
        border-radius: 16px;
        display: inline-block;
        margin: 16px;
        transition-property: filter;
        transition-duration: .3s;
    }

    .btn:hover {
        filter: brightness(0.8);
    }
&lt;/style&gt;
</code></pre>
</head>
<body>
    <h1 style="text-align: center;color: #673AB7;">BurgerDialog</h1>
    <div style="text-align: center;">
        <button class="btn waves-block" onclick="openDialog('#dialog-1');">弹出对话框-1</button>
    </div>
    <div class="burger-dialog" id="dialog-1">
        <div class="burger-dialog-title">对话框标题</div>
        <div class="burger-dialog-content">对话框内容<br>Made by Burger Studio.</div>
        <div class="burger-dialog-actions">
            <button class="waves-block" onclick="closeDialog('#dialog-1');">取消</button>
            <button class="waves-block" onclick="closeDialog('#dialog-1');">确定</button>
        </div>
    </div>
    <script>
        function openDialog(element) {
            document.querySelector(element).style.opacity = "1";
            document.querySelector(element).style.transform = "scale(1)";
            document.querySelector(element).style.zIndex = "999";
            setTimeout(function() {
                document.querySelector(element).style.display = "block";
            }, 0);
        }
        function closeDialog(element) {
            document.querySelector(element).style.display = "none";
            document.querySelector(element).style.opacity = "0";
            document.querySelector(element).style.transform = "scale(.85)";
            document.querySelector(element).style.zIndex = "-1";
        }
    </script>
    <script src="waves/waves.min.js"></script>
    <script>
        var config = {
            duration: 500,
            delay: 0
        };
        Waves.init(config);
        Waves.attach('.waves-block', ['waves-block']);
        Waves.attach('.waves-circle', ['waves-circle']);
        Waves.attach('.waves-light', ['waves-light']);
        Waves.attach('.waves-classic', ['waves-classic']);
        Waves.init(config);
    </script>
</body>
</html>
<p>对话框没有动画效果的原因是因为在打开对话框时，将其display属性设置为了'block'，这会立即显示对话框而没有过渡效果。要实现动画效果，可以将display属性设置为'none'，然后使用setTimeout函数在稍后的事件循环中将其设置为'block'。这样就会触发过渡效果。</p>
<p>以下是修改后的代码：</p>
<pre><code class="language-javascript">function openDialog(element) {
  document.querySelector(element).style.opacity = &quot;1&quot;;
  document.querySelector(element).style.transform = &quot;scale(1)&quot;;
  document.querySelector(element).style.zIndex = &quot;999&quot;;
  setTimeout(function() {
    document.querySelector(element).style.display = &quot;block&quot;;
  }, 0);
}
</code></pre>
<p>通过在setTimeout中将display属性设置为'block'，可以确保对话框在下一个事件循环中显示，从而触发过渡效果。</p>