给主题侧边栏添加倒计时

前言

很多人都加了这个倒计时的小组件，我参考无名大佬的样式也给主题添加了这个组件。理论是所有Butterfly类主题都可以添加这个组件，但是我没有试过

这里是基于安知鱼主题实现的，其它主题可能需要修改一下JS代码中Css的变量，样式具体看本站侧边栏

使用方法

1. 创建JS文件

在博客目录的 source 文件夹下创建 countdown.js 文件(也可以在source文件夹下另外新建文件夹)。

javascript

const CountdownTimer = (() => {
    const config = {
        targetDate: "2025-01-29",
        targetName: "春节",
        units: {
            day: { text: "今日", unit: "小时" },
            week: { text: "本周", unit: "天" },
            month: { text: "本月", unit: "天" },
            year: { text: "本年", unit: "天" }
        }
    };

    const calculators = {
        day: () => {
            const hours = new Date().getHours();
            return {
                remaining: 24 - hours,
                percentage: (hours / 24) * 100
            };
        },
        week: () => {
            const day = new Date().getDay();
            const passed = day === 0 ? 6 : day - 1;
            return {
                remaining: 6 - passed,
                percentage: ((passed + 1) / 7) * 100
            };
        },
        month: () => {
            const now = new Date();
            const total = new Date(now.getFullYear(), now.getMonth() + 1, 0).getDate();
            const passed = now.getDate() - 1;
            return {
                remaining: total - passed,
                percentage: (passed / total) * 100
            };
        },
        year: () => {
            const now = new Date();
            const start = new Date(now.getFullYear(), 0, 1);
            const total = 365 + (now.getFullYear() % 4 === 0 ? 1 : 0);
            const passed = Math.floor((now - start) / 86400000);
            return {
                remaining: total - passed,
                percentage: (passed / total) * 100
            };
        }
    };

    function updateCountdown() {
        const elements = ['eventName', 'eventDate', 'daysUntil', 'countRight']
            .map(id => document.getElementById(id));

        if (elements.some(el => !el)) return;

        const [eventName, eventDate, daysUntil, countRight] = elements;
        const now = new Date();
        const target = new Date(config.targetDate);

        eventName.textContent = config.targetName;
        eventDate.textContent = config.targetDate;
        daysUntil.textContent = Math.round((target - now.setHours(0,0,0,0)) / 86400000);

        countRight.innerHTML = Object.entries(config.units)
            .map(([key, {text, unit}]) => {
                const {remaining, percentage} = calculators[key]();
                return `
                    <div class="cd-count-item">
                        <div class="cd-item-name">${text}</div>
                        <div class="cd-item-progress">
                            <div class="cd-progress-bar" style="width: ${percentage}%; opacity: ${percentage/100}"></div>
                            <span class="cd-percentage ${percentage >= 46 ? 'cd-many' : ''}">${percentage.toFixed(2)}%</span>
                            <span class="cd-remaining ${percentage >= 60 ? 'cd-many' : ''}">
                                <span class="cd-tip">还剩</span>${remaining}<span class="cd-tip">${unit}</span>
                            </span>
                        </div>
                    </div>
                `;
            }).join('');
    }

    function injectStyles() {
        const styles = `
            .card-countdown .item-content {
                display: flex;
            }
            .cd-count-left {
                position: relative;
                display: flex;
                flex-direction: column;
                margin-right: 0.8rem;
                line-height: 1.5;
                align-items: center;
                justify-content: center;
            }
            .cd-count-left .cd-text {
                font-size: 14px;
            }
            .cd-count-left .cd-name {
                font-weight: bold;
                font-size: 18px;
            }
            .cd-count-left .cd-time {
                font-size: 30px;
                font-weight: bold;
                color: var(--anzhiyu-main);
            }
            .cd-count-left .cd-date {
                font-size: 12px;
                opacity: 0.6;
            }
            .cd-count-left::after {
                content: "";
                position: absolute;
                right: -0.8rem;
                width: 2px;
                height: 80%;
                background-color: var(--anzhiyu-main);
                opacity: 0.5;
            }
            .cd-count-right {
                flex: 1;
                margin-left: .8rem;
                display: flex;
                flex-direction: column;
                justify-content: space-between;
            }
            .cd-count-item {
                display: flex;
                flex-direction: row;
                align-items: center;
                height: 24px;
            }
            .cd-item-name {
                font-size: 14px;
                margin-right: 0.8rem;
                white-space: nowrap;
            }
            .cd-item-progress {
                position: relative;
                display: flex;
                flex-direction: row;
                align-items: center;
                justify-content: space-between;
                height: 100%;
                width: 100%;
                border-radius: 8px;
                background-color: var(--anzhiyu-background);
                overflow: hidden;
            }
            .cd-progress-bar {
                height: 100%;
                border-radius: 8px;
                background-color: var(--anzhiyu-main);
            }
            .cd-percentage,
            .cd-remaining {
                position: absolute;
                font-size: 12px;
                margin: 0 6px;
                transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out;
            }
            .cd-many {
                color: #fff;
            }
            .cd-remaining {
                opacity: 0;
                transform: translateX(10px);
            }
            .card-countdown .item-content:hover .cd-remaining {
                transform: translateX(0);
                opacity: 1;
            }
            .card-countdown .item-content:hover .cd-percentage {
                transform: translateX(-10px);
                opacity: 0;
            }
        `;

        const styleSheet = document.createElement("style");
        styleSheet.textContent = styles;
        document.head.appendChild(styleSheet);
    }

    let timer;
    const start = () => {
        injectStyles();
        updateCountdown();
        timer = setInterval(updateCountdown, 600000);
    };

    ['pjax:complete', 'DOMContentLoaded'].forEach(event => document.addEventListener(event, start));
    document.addEventListener('pjax:send', () => timer && clearInterval(timer));

    return { start, stop: () => timer && clearInterval(timer) };
})();

2. 添加组件配置

在 source/_data/widget.yml 中添加以下配置:

yaml

top:
  - class_name: card-countdown
    id_name:
    name:
    icon:
    html: |
      <div class="cd-count-left">
        <span class="cd-text">距离</span>
        <span class="cd-name" id="eventName"></span>
        <span class="cd-time" id="daysUntil"></span>
        <span class="cd-date" id="eventDate"></span>
      </div>
      <div id="countRight" class="cd-count-right"></div>

3. 引入JS文件

在 _config.anzhiyu.yml 主题配置文件的 inject 配置项的 bottom 中引入 JS 文件:

仅供参考 static是我在source文件夹下创建的文件夹具体根据实际情况修改！！

yaml

inject:
  bottom:
    - <script src="/static/countdown.js"></script>

4. 配置目标日期

javascript

const config = {
    targetDate: "2025-01-29", // 目标日期
    targetName: "春节", // 名称
    ...
}

结语

如果文章内容有错误之处,欢迎在评论区指出!