自定义模态对话框

虽然 htmx 与 CSS 框架中内置的对话框 (例如 Bootstrap 和 UIKit) 搭配使用效果很好，但 htmx 也使从头构建模态对话框变得容易。以下是一个快速示例，说明构建模态对话框的一种方法。

单击此处查看最终结果的演示

#高级计划

我们将创建一个按钮，用于从服务器加载远程内容，然后将其显示在模态对话框中。模态内容将添加到 <body> 元素的末尾，位于名为 #modal 的 div 中。

在此演示中，我们将使用 CSS 定义一些不错的动画，然后使用一些 Hyperscript 从 DOM 中删除模态，以便在用户完成操作后不再显示。Hyperscript 不是 htmx 所必需的，但这两个工具的设计初衷是共同使用，并且对于编写异步和事件导向的代码比 JavaScript 更友好，这就是我们在此示例中选择它作为示例的原因。

#主页 HTML

<button class="btn primary" hx-get="/modal" hx-target="body" hx-swap="beforeend">Open a Modal</button>

<div id="modal" _="on closeModal add .closing then wait for animationend then remove me">
	<div class="modal-underlay" _="on click trigger closeModal"></div>
	<div class="modal-content">
		<h1>Modal Dialog</h1>
		This is the modal content.
		You can put anything here, like text, or a form, or an image.
		<br>
		<br>
		<button class="btn danger" _="on click trigger closeModal">Close</button>
	</div>
</div>

#自定义样式表

/***** MODAL DIALOG ****/
#modal {
	/* Underlay covers entire screen. */
	position: fixed;
	top:0px;
	bottom: 0px;
	left:0px;
	right:0px;
	background-color:rgba(0,0,0,0.5);
	z-index:1000;

	/* Flexbox centers the .modal-content vertically and horizontally */
	display:flex;
	flex-direction:column;
	align-items:center;

	/* Animate when opening */
	animation-name: fadeIn;
	animation-duration:150ms;
	animation-timing-function: ease;
}

#modal > .modal-underlay {
	/* underlay takes up the entire viewport. This is only
	required if you want to click to dismiss the popup */
	position: absolute;
	z-index: -1;
	top:0px;
	bottom:0px;
	left: 0px;
	right: 0px;
}

#modal > .modal-content {
	/* Position visible dialog near the top of the window */
	margin-top:10vh;

	/* Sizing for visible dialog */
	width:80%;
	max-width:600px;

	/* Display properties for visible dialog*/
	border:solid 1px #999;
	border-radius:8px;
	box-shadow: 0px 0px 20px 0px rgba(0,0,0,0.3);
	background-color:white;
	padding:20px;

	/* Animate when opening */
	animation-name:zoomIn;
	animation-duration:150ms;
	animation-timing-function: ease;
}

#modal.closing {
	/* Animate when closing */
	animation-name: fadeOut;
	animation-duration:150ms;
	animation-timing-function: ease;
}

#modal.closing > .modal-content {
	/* Animate when closing */
	animation-name: zoomOut;
	animation-duration:150ms;
	animation-timing-function: ease;
}

@keyframes fadeIn {
	0% {opacity: 0;}
	100% {opacity: 1;}
}

@keyframes fadeOut {
	0% {opacity: 1;}
	100% {opacity: 0;}
}

@keyframes zoomIn {
	0% {transform: scale(0.9);}
	100% {transform: scale(1);}
}

@keyframes zoomOut {
	0% {transform: scale(1);}
	100% {transform: scale(0.9);}
}