Tern & Browser support - angelozerr/tern.java GitHub Wiki
tern.js provides the browser Tern JSON Type Definition which gives a support for Browser.
After installing and converting your project as Tern Project, go at Tern project property, click on Tern / Modules item and select the Browser tern module:
After that you can benefit with Browser completion :
Completion for DOM Element is available :
Completion for Event parameter is available :