我试图找到一种方法在我的网站上延迟加载图像,因为我将拥有大量图像库,因此我不希望出现任何性能问题。我正在在线学习教程,在该教程中,他们用data-src替换了src,但这使我的链接断开了。如果我集成了lightgallery,是否可以像这样进行延迟加载?
DECLARE EXIT HANDLER FOR SQLEXCEPTION
BEGIN
ROLLBACK;
-- other logic
END;
document.addEventListener("DOMContentLoaded", function() {
var lazyloadImages = document.querySelectorAll("img.lazy");
var lazyloadThrottleTimeout;
function lazyload() {
if (lazyloadThrottleTimeout) {
clearTimeout(lazyloadThrottleTimeout);
}
lazyloadThrottleTimeout = setTimeout(function() {
var scrollTop = window.pageYOffset;
lazyloadImages.forEach(function(img) {
if (img.offsetTop < (window.innerHeight + scrollTop)) {
img.src = img.dataset.src;
img.classList.remove('lazy');
}
});
if (lazyloadImages.length == 0) {
document.removeEventListener("scroll", lazyload);
window.removeEventListener("resize", lazyload);
window.removeEventListener("orientationChange", lazyload);
}
}, 20);
}
document.addEventListener("scroll", lazyload);
window.addEventListener("resize", lazyload);
window.addEventListener("orientationChange", lazyload);
});
答案 0 :(得分:0)
如何使用CSS从DOM隐藏未加载的图像?
img.lazy {
display: none;
}