function w(){
let htmlwidth = document.documentElement.clientWidth || document.body.clientWidth;
let htmlDom = document.getElementsByTagName('html')[0];
// if (htmlwidth > 750) {
// htmlwidth = 750
// }
htmlDom.style.fontSize = htmlwidth / 20 + 'px';
}
// 实时监测当前设备是否进行横竖屏切换
var evt = "onorientationchange" in window ? "orientationchange" : "resize";
window.addEventListener(evt, resize, false);
function resize(fals) {
if (window.orientation == 0 || window.orientation == 180) {
w()
} else {
w()
}
}
resize(true);
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