查看“MediaWiki:Common.js”的源代码

/* 这里的任何JavaScript将为所有用户在每次页面载入时加载。 */
document.addEventListener("DOMContentLoaded", function () {
    const tocLinks = Array.from(document.querySelectorAll("#toc a"));
    const sections = tocLinks.map(link => {
        const target = document.getElementById(decodeURIComponent(link.getAttribute("href").substring(1)));
        return target ? { link, target } : null;
    }).filter(Boolean);

    function onScroll() {
        let currentSection = null;
        const scrollTop = window.scrollY + 100; // 提前一点触发高亮

        for (let i = 0; i < sections.length; i++) {
            const sectionTop = sections[i].target.offsetTop;
            if (scrollTop >= sectionTop) {
                currentSection = sections[i];
            } else {
                break;
            }
        }

        tocLinks.forEach(link => link.classList.remove("active-section"));
        if (currentSection) {
            currentSection.link.classList.add("active-section");
        }
    }

    window.addEventListener("scroll", onScroll);
    onScroll(); // 初始加载时触发一次
});