时间：2021-03-10 09:25:25 | 栏目：JavaScript代码 | 点击：次
在javascript写下如下几行：
(function (doc, win, undefined) {
var docEl = doc.documentElement,
resizeEvt = 'orientationchange' in win? 'orientationchange' : 'resize',
recalc = function () {
var clientWidth = docEl.clientWidth;
if (clientWidth === undefined) return;
docEl.style.fontSize = 20 * (clientWidth / 320) + 'px';
};
if (doc.addEventListener === undefined) return;
win.addEventListener(resizeEvt, recalc, false);
doc.addEventListener('DOMContentLoaded', recalc, false)
})(document, window);