1. export const initStroageEvent = () => {
    2.   // 保存原始的setItem功能
    3.   const original = localStorage.setItem;
    4.   // 对setItem进行扩展
    5.   // 1. 增加Event事件并派发
    6.   // 2. 执行原始的set功能
    7.   localStorage.setItem = function (key, value) {
    8.     // * 不支持IE：https://caniuse.com/?search=Event()
    9.     let event = new Event("localStroage");
    10.     event.key = key;
    11.     event.newValue = value;
    12.     window.dispatchEvent(event);
    13.     original.apply(this, arguments);
    14.   };
    15. };
    1. import { initStroageEvent } from "./utils.js";
    2. initStroageEvent();
    1. mounted() {
    2.     window.addEventListener("localStroage", function (e) {
    3.       console.log("localStroage", e.key, e.newValue);
    4.     });
    5. },
    6. methods: {
    7.     save() {
    8.       localStorage.setItem("name", "张三");
    9.     },
    10. },