javascript - 为什么我的浅色主题在页面重新加载后会重置？

Question

正如你所看到的，我将它存储在 localStorage 中，它工作得很好。当我重新加载页面时出现问题，它正在重置回主(深色)主题..

let lightMode = localStorage.getItem("theme")

const lightModeToggle = document.querySelector(".moon-white");

const enableLightMode = () => {
    document.body.classList.add("light-theme");

    localStorage.setItem("theme", "enabled");
};

const disableLightMode = () => {
    document.body.classList.remove("light-theme");

    localStorage.setItem("theme", null);
};

lightModeToggle.addEventListener("click", () => {
    lightMode = localStorage.getItem("theme");
    if (lightMode !== 'enabled') {
        enableLightMode();
    } else {  
        disableLightMode ();
    }
});

Answer 1

我想你失踪了document.onload监听器从 localStorage 读取当前主题，然后在加载到 DOM 时将其设置到文档。

let lightMode = localStorage.getItem("theme")

const lightModeToggle = document.querySelector(".moon-white");

const enableLightMode = () => {
    document.body.classList.add("light-theme");

    localStorage.setItem("theme", "enabled");
};

const disableLightMode = () => {
    document.body.classList.remove("light-theme");

    localStorage.setItem("theme", null);
};

lightModeToggle.addEventListener("click", () => {
    lightMode = localStorage.getItem("theme");
    if (lightMode !== 'enabled') {
        enableLightMode();
    } else {  
        disableLightMode();
    }
});

document.addEventListener("load", () => {
    if (lightMode === 'enabled') {
        enableLightMode();
    } else {  
        disableLightMode();
    }
});

更新:使用onload来load事件!