A mini REPL based on jsdom.

npm install -g jsdom-cli

jsdom-cli http://example.com or just jsdom-cli

Open a new url > open("http://google.com")

Inject javascript. > inject("./lib/underscore.js")

Inject the lastest version of jquery

> jQueryfiy()
undefined
> $('div')
...

Edit the DOM with the default HTML editor and reload it

Inspect and navigate the DOM like in the browsers dev tools