index.html 2.3 KB
<!DOCTYPE html>
<html lang="zh-CN">

	<head>
		<meta charset="utf-8">
		<meta http-equiv="X-UA-Compatible" content="IE=edge">
		<title>
			<%= htmlWebpackPlugin.options.title %>
		</title>
		<script>
			document.addEventListener('DOMContentLoaded', function() {
				document.documentElement.style.fontSize = document.documentElement.clientWidth / 20 + 'px'
			})
			var coverSupport = 'CSS' in window && typeof CSS.supports === 'function' && (CSS.supports('top: env(a)') || CSS
				.supports('top: constant(a)'))
			document.write(
				'<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0' +
				(coverSupport ? ', viewport-fit=cover' : '') + '" />')
		</script>
		<link rel="stylesheet" href="<%= BASE_URL %>static/index.<%= VUE_APP_INDEX_CSS_HASH %>.css" />
	</head>

	<body>
		<noscript>
			<strong>Please enable JavaScript to continue.</strong>
		</noscript>
		<div id="app"></div>
		<!-- built files will be auto injected -->
	</body>

	<script type="text/javascript">
		(function flexible(window, document) {
			var docEl = document.documentElement
			var dpr = window.devicePixelRatio || 1

			// adjust body font size
			function setBodyFontSize() {
				if (document.body) {
					document.body.style.fontSize = (12 * dpr) + 'px'
				} else {
					document.addEventListener('DOMContentLoaded', setBodyFontSize)
				}
			}
			setBodyFontSize();

			// set 1rem = viewWidth / 10
			function setRemUnit() {
				var rem = docEl.clientWidth / 10
				if (rem > 54) {
					rem = 54
				}
				docEl.style.fontSize = rem + 'px'
			}

			setRemUnit()

			// reset rem unit on page resize
			window.addEventListener('resize', setRemUnit)
			window.addEventListener('pageshow', function(e) {
				if (e.persisted) {
					setRemUnit()
				}
			})

			// detect 0.5px supports
			if (dpr >= 2) {
				var fakeBody = document.createElement('body')
				var testElement = document.createElement('div')
				testElement.style.border = '.5px solid transparent'
				fakeBody.appendChild(testElement)
				docEl.appendChild(fakeBody)
				if (testElement.offsetHeight === 1) {
					docEl.classList.add('hairlines')
				}
				docEl.removeChild(fakeBody)
			}
		}(window, document))
	</script>
</html>