@pitaj thank you,it works well.

i want write a plugin about watch webtorrent video in nodebb.but when i use these in my chrome browser,it does not work.

$.getScript("https://cdn.jsdelivr.net/webtorrent/latest/webtorrent.min.js");
var wtclient = new WebTorrent();

output show me that

Uncaught ReferenceError: WebTorrent is not defined
    at <anonymous>:1:16

the whole code is in my github.
how can i fix this problem?

software version

nodebb: 1.6.1
chrome: 62.0.3202.62
windows 10
node 6.8.0