Created
May 3, 2019 00:12
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Save TrywaR/1bef4c20208db13a4020d8862a15a0fd to your computer and use it in GitHub Desktop.
Ленивая подгрузка картинок в зависимости от того видно ли блок с ними пользователю, можно использовать в связке с https://modernizr.com/download?webp-webpalpha-webpanimation-setclasses чтобы если браузер поддерживает webp картинки подгружались в этом формате
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| /*_____________________ VeryLazy ______________________*/ | |
| function VeryLazy(){ | |
| $(document).find('.home ._block').each(function(index, element){ | |
| if ($(document).scrollTop() > $(this).offset().top - $(window).height()){ | |
| $(this).addClass('active').find('img[data-src]').each(function() { | |
| if ($('html').hasClass('webp') && $(this).data().webp) | |
| $(this).attr('src', $(this).data().webp) | |
| else | |
| $(this).attr('src', $(this).data().src) | |
| }) | |
| } | |
| }) | |
| } | |
| $(document).scroll(function(){ | |
| VeryLazy() | |
| }) | |
| VeryLazy() | |
| /*///////////////////////////////////////////////////////*/ |
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Пример html
<img data-webp="img.webp" data-src="img.png" alt="VaeryLazyImg">