Hey there! :)
Creating a chrome extension to-do list complete with alarms should be fairly straightforward, and so long as you already have designs for how it should look, I'd be happy to help.
As for the standard "about me" formalities, I've been using JavaScript both professionally and as a hobby most of my life, and while I've only recently joined Freelancer.com, I've been freelancing as a JavaScript expert for quite some time now. By all means, feel free to check my profile for a few testimonials from past clients, as well as to get to know a bit more about me.
With that out of the way, I'd love to hear from you as soon as possible. Toss me a reply so we can get started right away! I look forward to working with you. :)