Dropdown not working

[vivekimsit]

While clicking on any dropdown item I am getting the following error on the console:

Uncaught ReferenceError: Animation is not defined

in paper-dropdown-transition line 80

[simonseyer]

I have the same problem and it's probably caused by the following:
Failed to execute 'write' on 'Document': It isn't possible to write into a document from an asynchronously-loaded external script unless it is explicitly opened. web-animations-next-lite.min.js.
The script tries to add a script by adding a script tag to the document:

document.write('<script src="' + location + 'target-config.js"></script>')

[morethanreal]

web-animations-next-lite.min.js shouldn't try to document.write. Which Polymer release are you on, and can you check what version of web-animations-js you're using?

[vivekimsit]

Guys, I am trying to use paper-dropdown-menu it was working fine few days back. I update my bower but still its not working now. On console I can see that I am missing this web-animations-lite-min.js but nowhere in the doc its mentioned that its needed for dropdown menu.

I think its related to this issue Polymer/polymer#1014

Can someone point me to doc for how to get web-animation-lite?

[simonseyer]

Ok, my fault. I don't know, why my web-animations-next-lite.min.js was different compared to the repository version. After a new checkout everything works well.

[cdata]

@vivekimsit In case your question about where to find the Web Animations polyfill hasn't been addressed, refer to https://github.com/web-animations/web-animations-js for the latest.

[vivekimsit]

Hi,

I have checked out the latest source but now I am facing some other issue while opening the dropdown, it says:

Uncaught TypeError: Cannot read property 'cancel' of null from the file web-animations-next-player.js

I think the dev is not tested properly while pushing new changes. So, let me know if I should fall back to the core menu instead.

Thanks!

[ahmed-masud]

This problem seems to have resurfaced for me.... My element that utilizes neon-animations was working against Polymer 1.0.4 and broke down somewhere between then and the latest release