Check if elem is not null

[Margaux]

https://github.com/desandro/imagesloaded/blob/master/imagesloaded.js#L136

Check if elem is not null

if ( elem && elem.nodeName == 'IMG' ) {

[David DeSandro]

Thanks for this contribution. Could you provide the use case where this error occurs? Tracing back the code. addElementImages is applied to this.elements. this.elements is set to an array of queryElem. If queryElem is falsey, imagesloaded should return in its constructor. So there's an edge case I'm not accounting for.

[Margaux]

@desandro queryElem can any array. in my case, I guess... it was imagesLoaded([undefined]).

more details,

html

<div class="feed"></div>

javascript

// ...
const images = Array.prototype.slice.call(document.querySelectorAll('.feed')).map((feed) => feed.getElementsByTagName('img')[0]);
const loaded = imagesLoaded(images);
// ...

and I think I have to fix my code filtering empty feed... 😅

[David DeSandro]

You could just do imagesLoaded('.feed') rather than querying, slicing and mapping individual images.