Web Sitenizin Hızını Artırmak İçin 10 Gizli Yöntem: Performans İyileştirme Stratejileri

document.addEventListener("DOMContentLoaded", function() {
    const lazyImages = document.querySelectorAll("img.lazy");
    const config = {
        rootMargin: "200px 0px",
        threshold: 0.01
    };
    let observer;

    if ('IntersectionObserver' in window) {
        observer = new IntersectionObserver(function(entries, self) {
            entries.forEach(function(entry) {
                if (entry.isIntersecting) {
                    const lazyImage = entry.target;
                    lazyImage.src = lazyImage.dataset.src;
                    lazyImage.classList.remove("lazy");
                    self.unobserve(lazyImage);
                }
            });
        }, config);

        lazyImages.forEach(function(image) {
            observer.observe(image);
        });
    }
});

@font-face {
  font-family: 'YourFont';
  src: url('your-font.woff2') format('woff2');
  font-display: swap;
}