vue项目处理dpr和多屏幕适配问题
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<head>
<meta charset="utf-8">
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<title>快问中医</title>
<style>
html { /*消除click 300ms延迟*/
touch-action: manipulation;
}
html, body {
height: 100%;
width: 100%;
/*max-width: 580px;*/
margin: 0 auto;
overflow-x: hidden;
overflow-y: hidden;
background-color: #F0F0F0;
font-family: Helvetica Neue, Helvetica, Arial, sans-serif !important;
}
* {
box-sizing: border-box;
}
</style>
<!-- 淘宝flexible方案 -->
<script>
(function (win, lib) {
var doc = win.document
var docEl = doc.documentElement
var metaEl = doc.querySelector('meta[name="viewport"]')
var flexibleEl = doc.querySelector('meta[name="flexible"]')
var dpr = 0
var scale = 0
var tid
var flexible = lib.flexible || (lib.flexible = {})
if (metaEl) {
console.warn('将根据已有的meta标签来设置缩放比例')
var match = metaEl.getAttribute('content').match(/initial\-scale=([\d\.]+)/)
if (match) {
scale = parseFloat(match[1])
dpr = parseInt(1 / scale)
}
} else if (flexibleEl) {
var content = flexibleEl.getAttribute('content')
if (content) {
var initialDpr = content.match(/initial\-dpr=([\d\.]+)/)
var maximumDpr = content.match(/maximum\-dpr=([\d\.]+)/)
if (initialDpr) {
dpr = parseFloat(initialDpr[1])
scale = parseFloat((1 / dpr).toFixed(2))
}
if (maximumDpr) {
dpr = parseFloat(maximumDpr[1])
scale = parseFloat((1 / dpr).toFixed(2))
}
}
}
if (!dpr && !scale) {
var isAndroid = win.navigator.appVersion.match(/android/gi)
var isIPhone = win.navigator.appVersion.match(/iphone/gi)
var devicePixelRatio = win.devicePixelRatio
// if (isIPhone) {
// // iOS下，对于2和3的屏，用2倍的方案，其余的用1倍方案
// if (devicePixelRatio >= 3 && (!dpr || dpr >= 3)) {
// dpr = 3;
// } else if (devicePixelRatio >= 2 && (!dpr || dpr >= 2)){
// dpr = 2;
// } else {
// dpr = 1;
// }
// } else {
// // 其他设备下，仍旧使用1倍的方案
// dpr = 1;
// }
dpr = 1
scale = 1 / dpr
}
docEl.setAttribute('data-dpr', dpr)
if (!metaEl) {
metaEl = doc.createElement('meta')
metaEl.setAttribute('name', 'viewport')
metaEl.setAttribute('content', 'initial-scale=' + scale + ', maximum-scale=' + scale + ', minimum-scale=' + scale + ', user-scalable=no')
if (docEl.firstElementChild) {
docEl.firstElementChild.appendChild(metaEl)
} else {
var wrap = doc.createElement('div')
wrap.appendChild(metaEl)
doc.write(wrap.innerHTML)
}
}
function refreshRem () {
var width = docEl.getBoundingClientRect().width
if (width / dpr > 540) {
width = 540 * dpr
}
var rem = width / 10
docEl.style.fontSize = rem + 'px'
flexible.rem = win.rem = rem
}
win.addEventListener('resize', function () {
clearTimeout(tid)
tid = setTimeout(refreshRem, 300)
}, false)
win.addEventListener('pageshow', function (e) {
if (e.persisted) {
clearTimeout(tid)
tid = setTimeout(refreshRem, 300)
}
}, false)
if (doc.readyState === 'complete') {
// doc.body.style.fontSize = 12 * dpr + 'px';
doc.body.style.fontSize = 16 + 'px'
} else {
doc.addEventListener('DOMContentLoaded', function (e) {
// doc.body.style.fontSize = 12 * dpr + 'px';
doc.body.style.fontSize = 16 + 'px'
}, false)
}
refreshRem()
flexible.dpr = win.dpr = dpr
flexible.refreshRem = refreshRem
flexible.rem2px = function (d) {
var val = parseFloat(d) * this.rem
if (typeof d === 'string' && d.match(/rem$/)) {
val += 'px'
}
return val
}
flexible.px2rem = function (d) {
var val = parseFloat(d) / this.rem
if (typeof d === 'string' && d.match(/px$/)) {
val += 'rem'
}
return val
}
})(window, window['lib'] || (window['lib'] = {}))
</script>
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<script>
var host = window.location.host
;(function isFormalEnv(host){
if(host.indexOf('kw13.cn') !== -1){
window.isFormalEnv = true
window.isTestEnv = false
} else if(host.indexOf('kwmzy.com') !== -1) {
window.isTestEnv = true
window.isFormalEnv = false
}
})(host)
</script>
<!-- 腾讯移动统计配置 -->
<script>
var mtah5 = {}
if(window.isFormalEnv){
mtah5.sid = 500411881
mtah5.cid = 500432840
} else { // 本地、测试环境使用
mtah5.sid = 500412096
mtah5.cid = 500426037
}
var _mtac = {"performanceMonitor":1,"senseQuery":1};
(function() {
var mta = document.createElement("script");
mta.setAttribute("name", "MTAH5");
mta.setAttribute("sid", mtah5.sid);
mta.setAttribute("cid", mtah5.cid);
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<div ><!-- built files will be auto injected --></div>
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