HTML – 容器布局，使容器充满屏幕高度，自适应剩余高度

HTML – 容器布局，使容器充满屏幕高度，自适应剩余高度

• 一. 实现方法（flex 布局）
• 二. 功能实例

一. 实现方法（flex 布局）

容器使用使用 display:flex 布局，自适应容器使用 flex:1 充满屏幕

div class="container">
	div class="header">div>
	
	div class="content">内容div>
	div class="footer">div>
div>

.container{
	width: 100%;
    height:100vh;
    display:flex;
    flex-direction: column;
}
.header{
	width: 100%;
    height:50px;
}
.content{
	width: 100%;
    flex:1;
}
.footer{
	width: 100%;
    height:50px;
}

优化：为防止出现内容超出容器情况，自适应容器中多嵌套一层 定位容器，保证内容在容器中显示

div class="container">
	div class="header">div>
	
	div class="content">
		
		div class="postion">内容div>
	div>
	div class="footer">div>
div>

.container{
	width: 100%;
    height:100vh;
    display:flex;
    flex-direction: column;
}
.header{
	width: 100%;
    height:50px;
}
.content{
	width: 100%;
    flex:1;
	position: relative;
}
.postion {
	position: absolute;
	top: 0;
	left: 0;
	bottom: 0;
	right: 0;
}
.footer{
	width: 100%;
    height:50px;
}

二. 功能实例

DOCTYPE html>
html lang="en">

head>
	meta charset="UTF-8">
	meta http-equiv="X-UA-Compatible" content="IE=edge">
	meta name="viewport" content="width=device-width, initial-scale=1.0">
	title>容器充满屏幕，自适应剩余的高度title>
	style>
		* {
			margin: 0;
			padding: 0;
		}

		html,
		body {
			width: 100%;
			height: 100%;
			display: flex;
			background: #e2e2e2;
		}

		.menus {
			width: 160px;
			height: 100%;
			border-right: 1px solid #bbb;
			box-sizing: border-box;
			display: flex;
			flex-direction: column;
			align-items: center;
		}

		.menuItem {
			width: 130px;
			height: 40px;
			margin: 5px 0;
			background: #fff;
			border-radius: 10px;
			display: flex;
			justify-content: center;
			align-items: center;
			cursor: pointer;
		}

		.container {
			width: calc(100% - 160px);
			height: 100%;
			display: flex;
			flex-direction: column;
			padding: 10px;
			box-sizing: border-box;
		}

		.header {
			width: 100%;
			min-height: 50px;
			border-bottom: 1px solid #bbb;
			box-sizing: border-box;
			background: #f0d4b9;
		}

		.content {
			width: 100%;
			flex: 1;
			position: relative;
		}


		.postion {
			position: absolute;
			top: 0;
			left: 0;
			bottom: 0;
			right: 0;
		}

		.info1 {
			width: 100%;
			height: calc(100% - 80px);
			background: #b9e5f0;
			display: flex;
			align-items: center;
			justify-content: center;
		}

		.info2 {
			width: 100%;
			height: 80px;
			background: #c4b9f0;
			display: flex;
			align-items: center;
			justify-content: center;
		}
		.footer{
			width: 100%;
			height: 50px;
			border-top: 1px solid #bbb;
			box-sizing: border-box;
			display: flex;
			justify-content: center;
			align-items: center;
		}
	style>
head>

body>
	div class="menus">
		div class="menuItem" onclick="menuClick(this)">目录一div>
		div class="menuItem" onclick="menuClick(this)">目录二div>
	div>
	div class="container">
		div id="header" class="header">div>
		
		div class="content">
			
			div class="postion">
				div class="info1">内容一div>
				div class="info2">内容二div>
			div>
		div>
		div class="footer">Footer 部分div>
	div>
	script>
		function menuClick(evt) {
			const title = evt.innerHTML
			let inner = ''
			switch (title) {
				case "目录一":
					for (let i = 0; i  2; i++) {
						inner += `
${title} 标题${i + 1}`
					}
					break;
				case "目录二":
					for (let i = 0; i  4; i++) {
						inner += `
${title} 标题${i + 1}`
					}
					break;
			}
			document.getElementById('header').innerHTML = inner
		}
	script>
body>

html>