official-website-china/wp-content/themes/nenghui-energy-theme-cn/assets/js/index.js

// 这是自定义JS文件，用于覆盖主题默认JS文件

document.addEventListener('DOMContentLoaded', function() {
    // 菜单切换
    const menuToggle = document.querySelector('.menu-toggle');
    const navRight = document.querySelector('.nav-right');
    
    if (menuToggle && navRight) {
        menuToggle.addEventListener('click', function() {
            navRight.classList.toggle('active');
            
            // 切换菜单按钮动画
            const spans = this.getElementsByTagName('span');
            this.classList.toggle('active');
            
            if (this.classList.contains('active')) {
                spans[0].style.transform = 'rotate(45deg) translate(5px, 5px)';
                spans[1].style.opacity = '0';
                spans[2].style.transform = 'rotate(-45deg) translate(7px, -7px)';
            } else {
                spans[0].style.transform = 'none';
                spans[1].style.opacity = '1';
                spans[2].style.transform = 'none';
            }
        });
    }
    
    // 滚动时改变导航栏样式
    let lastScroll = 0;
    const nav = document.querySelector('.main-nav');
    
    window.addEventListener('scroll', function() {
        const currentScroll = window.pageYOffset;
        
        if (currentScroll > lastScroll && currentScroll > 80) {
            // 向下滚动
            nav.style.transform = 'translateY(-100%)';
        } else {
            // 向上滚动
            nav.style.transform = 'translateY(0)';
        }
        
        lastScroll = currentScroll;
    });
});