(function (doc, win) {
var docEl = doc.documentElement
var resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize'
var recalc = function () {
var clientWidth = docEl.clientWidth
if (!clientWidth) return
var size = 1920
if (/(iPhone|iPad|iPod|iOS)/i.test(navigator.userAgent)) {
size = 750
} else if (/(Android)/i.test(navigator.userAgent) && clientWidth !== 1920) {
size = 750
}
docEl.style.fontSize = 100 * (clientWidth / size) + 'px'
}
if (!doc.addEventListener) return
win.addEventListener(resizeEvt, recalc, false)
doc.addEventListener('DOMContentLoaded', recalc, false)
})(document, window)
转载于:https://my.oschina.net/u/3608045/blog/2989629