在用的彩蛋js代码

<?php
$isThreadPage = preg_match('/thread-\d+\.htm/i', $_SERVER['REQUEST_URI']);

$titleKeywords = ['2026', '新年', '春节', '大吉', '恭喜发财', '万事如意', '平安', '大年', '拜年'];
$titleHasKeyword = false;
if (isset($thread['subject'])) {
    $title = $thread['subject'];
    foreach ($titleKeywords as $kw) {
        if (strpos($title, $kw) !== false) {
            $titleHasKeyword = true;
            break;
        }
    }
}

if (false && $isThreadPage && $titleHasKeyword) {
?>
<script>
(function() {
    const CONFIG = {
        particleCount: 30, // 每次点击产生的粒子数量
        gravity: 0.15,     // 重力
        friction: 0.96,    // 摩擦力（空气阻力），越小减速越快
        textScaleSpeed: 0.05, // 文字变大速度
        colors: [
            '#FF0000', // 正红
            '#FF4500', // 橙红
            '#FFD700', // 金色
            '#FFA500', // 橙色
            '#FFFAF0', // 象牙白（增加闪烁感）
            '#DC143C'  // 猩红
        ],
        greetings: [
            '🧧 2026 新年快乐', '🧨 爆竹声声', '🏮 大吉大利', 
            '✨ 万事如意', '💰 恭喜发财', '🍎 岁岁平安', 
            '六六大顺 🥳', 'Happy 2026 😄'
        ]
    };

    if (document.getElementById('2026-spring-festival-canvas')) return;

    const canvas = document.createElement('canvas');
    canvas.id = '2026-spring-festival-canvas'; 
    const ctx = canvas.getContext('2d');
    canvas.style.position = 'fixed';
    canvas.style.top = '0';
    canvas.style.left = '0';
    canvas.style.width = '100%';
    canvas.style.height = '100%';
    canvas.style.pointerEvents = 'none'; 
    canvas.style.zIndex = '999999';
    canvas.style.userSelect = 'none'; 
    document.body.appendChild(canvas);

    let elements = [];
    let width = window.innerWidth;
    let height = window.innerHeight;

    function resize() {
        width = window.innerWidth;
        height = window.innerHeight;
        const dpr = window.devicePixelRatio || 1;
        canvas.width = width * dpr;
        canvas.height = height * dpr;
        ctx.scale(dpr, dpr);
        canvas.style.width = width + 'px';
        canvas.style.height = height + 'px';
    }
    window.addEventListener('resize', resize);
    resize();

    const random = (min, max) => Math.random() * (max - min) + min;
    const randomColor = () => CONFIG.colors[Math.floor(Math.random() * CONFIG.colors.length)];

    class Particle {
        constructor(x, y) {
            this.x = x;
            this.y = y;
            this.angle = random(0, Math.PI * 2); 
            this.velocity = random(4, 10); 
            this.vx = Math.cos(this.angle) * this.velocity;
            this.vy = Math.sin(this.angle) * this.velocity;
            this.color = randomColor();
            this.size = random(3, 6);
            this.opacity = 1;
            this.decay = random(0.015, 0.03); 
            this.rotation = 0;
            this.rotationSpeed = random(-0.2, 0.2); 
            this.shape = Math.random() > 0.5 ? 'circle' : 'rect'; 
        }

        update() {
            this.vx *= CONFIG.friction;
            this.vy *= CONFIG.friction;
            this.vy += CONFIG.gravity;
            this.x += this.vx;
            this.y += this.vy;
            this.rotation += this.rotationSpeed;
            this.opacity -= this.decay;
        }

        draw() {
            ctx.save();
            ctx.translate(this.x, this.y);
            ctx.rotate(this.rotation);
            ctx.globalAlpha = Math.max(0, this.opacity);
            ctx.fillStyle = this.color;

            if (this.shape === 'circle') {
                ctx.beginPath();
                ctx.arc(0, 0, this.size / 2, 0, Math.PI * 2);
                ctx.fill();
            } else {
                ctx.fillRect(-this.size / 2, -this.size / 2, this.size, this.size);
            }
            ctx.restore();
        }
    }

    class PopupText {
        constructor(x, y) {
            this.x = x;
            this.y = y;
            this.text = CONFIG.greetings[Math.floor(Math.random() * CONFIG.greetings.length)];
            this.scale = 0;
            this.opacity = 1;
            this.vy = -2; 
            this.friction = 0.98;
        }

        update() {
            if (this.scale < 1) {
                this.scale += (1 - this.scale) * 0.1; 
            }
            this.y += this.vy;
            this.vy *= this.friction;
            this.opacity -= 0.012;
        }

        draw() {
            ctx.save();
            ctx.translate(this.x, this.y);
            ctx.scale(this.scale, this.scale);
            ctx.globalAlpha = Math.max(0, this.opacity);
            
            ctx.font = 'bold 28px "Microsoft YaHei", "PingFang SC", sans-serif';
            ctx.textAlign = 'center';
            ctx.textBaseline = 'middle';

            ctx.shadowColor = '#FFD700';
            ctx.shadowBlur = 10;
            
            ctx.strokeStyle = '#FFFFFF';
            ctx.lineWidth = 4;
            ctx.strokeText(this.text, 0, 0);

            ctx.shadowBlur = 0;
            ctx.fillStyle = '#FF0000';
            ctx.fillText(this.text, 0, 0);

            ctx.restore();
        }
    }

    let lastTouchTime = 0;
    const triggerEffect = (e) => {
        if (e.type === 'touchstart') {
            lastTouchTime = Date.now();
        } else if (e.type === 'mousedown') {
            if (Date.now() - lastTouchTime < 500) return;
            if (e.button !== 0) return;
        }
        
        if (e.target.closest('a') || e.target.closest('button') || e.target.closest('.btn')) return;

        const x = e.clientX || (e.touches && e.touches[0].clientX);
        const y = e.clientY || (e.touches && e.touches[0].clientY);
        if (!x || !y) return;

        elements.push(new PopupText(x, y - 30));

        for (let i = 0; i < CONFIG.particleCount; i++) {
            elements.push(new Particle(x, y));
        }
    };

    const bindEvents = () => {
        window.removeEventListener('mousedown', triggerEffect);
        window.removeEventListener('touchstart', triggerEffect);
        
        window.addEventListener('mousedown', triggerEffect);
        window.addEventListener('touchstart', triggerEffect, { passive: true });
    };
    bindEvents();

    function animate() {
        if (elements.length > 0) {
            ctx.clearRect(0, 0, width, height);
            elements = elements.filter(el => el.opacity > 0);
            elements.forEach(el => {
                el.update();
                el.draw();
            });
        }
        requestAnimationFrame(animate);
    }
    animate();

    window.addEventListener('beforeunload', () => {
        elements = [];
        canvas.remove();
    });
})();
</script>

开头加了页面检测，只有帖子页面才触发，其它地方用去掉它

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