比如說我在src/util下面有一個rem.js的檔案，寫成自執行函式(function(doc, win) {var docEl = doc.documentElement,resizeEvt = "orientationchange" in window ? "orientationchange" : "resize",recalc = function() {var clientWidth = docEl.clientWidth;if (!clientWidth) return;docEl.style.fontSize = (clientWidth / 12) + "px";};if (!doc.addEventListener) return;win.addEventListener(resizeEvt, recalc, false);doc.addEventListener("DOMContentLoaded", recalc, false);})(document, window);然後在main.js中引用import "./util/rem"，然後每個路由都執行起來了