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删除 main.js

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yangyuqing
2026-06-02 13:21:37 +08:00
parent f09d80bef6
commit e0c202cf42
1 changed files with 0 additions and 149 deletions
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149
main.js
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@@ -1,149 +0,0 @@
// ========================================
// 导航栏滚动效果
// ========================================
const navbar = document.getElementById('navbar');
let lastScroll = 0;
window.addEventListener('scroll', () => {
const currentScroll = window.pageYOffset;
// 添加滚动时的阴影效果
if (currentScroll > 50) {
navbar.style.boxShadow = '0 4px 20px rgba(0, 0, 0, 0.1)';
} else {
navbar.style.boxShadow = '0 2px 10px rgba(0, 0, 0, 0.05)';
}
lastScroll = currentScroll;
});
// ========================================
// 移动端汉堡菜单
// ========================================
const hamburger = document.getElementById('hamburger');
const navMenu = document.getElementById('navMenu');
const navLinks = document.querySelectorAll('.nav-link');
hamburger.addEventListener('click', () => {
hamburger.classList.toggle('active');
navMenu.classList.toggle('active');
});
// 点击导航链接后关闭菜单
navLinks.forEach(link => {
link.addEventListener('click', () => {
hamburger.classList.remove('active');
navMenu.classList.remove('active');
});
});
// ========================================
// 平滑滚动到锚点
// ========================================
document.querySelectorAll('a[href^="#"]').forEach(anchor => {
anchor.addEventListener('click', function (e) {
e.preventDefault();
const target = document.querySelector(this.getAttribute('href'));
if (target) {
const offsetTop = target.offsetTop - 80; // 减去导航栏高度
window.scrollTo({
top: offsetTop,
behavior: 'smooth'
});
}
});
});
// ========================================
// 滚动时导航链接高亮
// ========================================
const sections = document.querySelectorAll('section[id]');
function highlightNavigation() {
const scrollY = window.pageYOffset;
sections.forEach(section => {
const sectionHeight = section.offsetHeight;
const sectionTop = section.offsetTop - 100;
const sectionId = section.getAttribute('id');
const navLink = document.querySelector(`.nav-link[href="#${sectionId}"]`);
if (navLink) {
if (scrollY > sectionTop && scrollY <= sectionTop + sectionHeight) {
navLink.classList.add('active');
} else {
navLink.classList.remove('active');
}
}
});
}
window.addEventListener('scroll', highlightNavigation);
// ========================================
// 卡片进入视口时的动画效果
// ========================================
const observerOptions = {
threshold: 0.1,
rootMargin: '0px 0px -50px 0px'
};
const observer = new IntersectionObserver((entries) => {
entries.forEach(entry => {
if (entry.isIntersecting) {
entry.target.style.opacity = '1';
entry.target.style.transform = 'translateY(0)';
}
});
}, observerOptions);
// 观察所有卡片元素
document.querySelectorAll('.card').forEach(card => {
card.style.opacity = '0';
card.style.transform = 'translateY(30px)';
card.style.transition = 'opacity 0.6s ease-out, transform 0.6s ease-out';
observer.observe(card);
});
// ========================================
// 页面加载完成后的初始化
// ========================================
window.addEventListener('load', () => {
// 添加页面加载完成的类，用于触发初始动画
document.body.classList.add('loaded');
// 立即执行一次高亮检查
highlightNavigation();
});
// ========================================
// 图片懒加载（可选优化）
// ========================================
if ('IntersectionObserver' in window) {
const imageObserver = new IntersectionObserver((entries, observer) => {
entries.forEach(entry => {
if (entry.isIntersecting) {
const img = entry.target;
if (img.dataset.src) {
img.src = img.dataset.src;
img.removeAttribute('data-src');
observer.unobserve(img);
}
}
});
});
// 可以将来为实际图片添加 data-src 属性实现懒加载
}
// ========================================
// 响应式处理 - 窗口大小改变时重置菜单
// ========================================
window.addEventListener('resize', () => {
if (window.innerWidth > 768) {
hamburger.classList.remove('active');
navMenu.classList.remove('active');
}
});