site_8g/src/utils/index.ts

// 设置根节点html的字体大小用于移动端适配使用
export const setHtmlFontSize = () => {
    console.count("setHtmlFontSize");
    (function (doc, win) {
        let resizeEvt = "orientationchange" in win ? "orientationchange" : "resize",
            recalc = function () {
                let htmlDom = doc.getElementsByTagName("html")[0];
                requestAnimationFrame(() => {
                    let clientWidth = doc.documentElement.clientWidth || doc.body.clientWidth;
                    if (!clientWidth) return;
                    htmlDom.style.fontSize =
                        clientWidth >= 578.88 ? "144px" : 154.5 * (clientWidth / 578.88) + "px";
                });
            };
        if (!doc.addEventListener) return;
        win.addEventListener(resizeEvt, recalc, false);
        doc.addEventListener("DOMContentLoaded", recalc, false);
        recalc();
    })(document, window);
};