Photoswipe Cannot read property 'center' of undefined at line 1070 of photoswipe.js

Question

I am just dabbling with photoswipe, and so far I haven't done anything more advanced than simply implementing a copy of the get started demo with a few very small (and theoretically insignificant tweaks).

My picture gallery comes up just fine, and I have a total of 4 items in it as I am just trying to test it. The first picture will zoom and pan and all of that just great. However, the moment I switch pictures, I get the javascript error in this post title.

I am using the following as my items:

var items =[{"src":"/Images/Portfolio/Pieces/PhoenixFury.jpg","thumbnail":"/Images/Portfolio/Thumbs/PhoenixFury.jpg","msrc":"/Images/Portfolio/Thumbs/PhoenixFury.jpg","w":765,"h":1201,"title":"Phoenix\u0027s Fury","caption":"Illustration used for the cover of Lifeweaver","key":"Phoenix"},{"src":"/Images/Portfolio/Pieces/EnoreTower.jpg","thumbnail":"/Images/Portfolio/Thumbs/EnoreTower.jpg","msrc":"/Images/Portfolio/Thumbs/EnoreTower.jpg","w":765,"h":1200,"title":"Enore\u0027s Tower","caption":"Illustration used for the cover of Guardian\u0027s Peril","key":"Enore"},{"src":"/Images/Portfolio/Pieces/KenpoLogo.jpg","thumbnail":"/Images/Portfolio/Thumbs/KenpoLogo.jpg","msrc":"/Images/Portfolio/Thumbs/KenpoLogo.jpg","w":800,"h":966,"title":"Kenpo Karate Logo","caption":"Commissioned karate team logo for a team in Mexico with central american themes on the traditional Kenpo notion of a dragon and a tiger.","key":"Kenpo"},{"src":"/Images/Portfolio/Pieces/Quetzalcoatl.jpg","thumbnail":"/Images/Portfolio/Thumbs/Quetzalcoatl.jpg","msrc":"/Images/Portfolio/Thumbs/Quetzalcoatl.jpg","w":1600,"h":967,"title":"Quetzalcoatl","caption":"Central American ancient deity Quetzalcoatl, the feathered serpent.","key":"Quetzalcoatl"}];

I have added a few custom attributes, but I haven't done anything yet with the photoswipe to try to utilize those, so I don't imagine that is the problem.

I am using the following as my options:

        var options = {

            history: false,
            focus: false,
            index: 0,//I can verify that 0,1,2,3 all load up correctly for an initial load
            showAnimationDuration: 0,
            hideAnimationDuration: 0

        };

So then I just do the following:

   var photoswipe = new PhotoSwipe(pswpElement, PhotoSwipeUI_Default, items, options);
        photoswipe.init();

I have the pswpElement, and simply coppied the markup for that from the photoswipe site, so it should also be in line. I would really like to know what I need to do to make it so that it works when I swap to a new image.

I also verified that if I remove the u207 (encoded ') from the titles, it doesn't fix the problem just to try to be thorough about things.

Answer 1

Make sure that index option value is an Integer, not a String. parseInt( ... , 10)