javascript - How to force loading images for the webpages installed "lazy load" without scrolling? -


i implement chrome extension. extension needs images urls of webpages. however, webpages have "lazy load" plug-in. question if possible can still urls without required manually scrolling down?

many of lazy-load plugins stores actual url in data-* section. when scrolling down, right before image tag gets view data-* content set on src attribute start loading image.

you can iterate through image tags find links, example:

var images = document.queryselectorall("img"),     links = [], = 0, img;  while(img = images[i++])      links.push(img.dataset.original || img.src);

but note there no naming standard data-* holder different plugins use different names - you'll have collect these manually (f.ex. this plugin uses name data-original, this one uses data-layzr , on).

you possible addition step looping through dataset collection find string may seem contain url (if src empty), prone errors images same server relative links , data-* can hold other data too.


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