How can I create a time tracker or punch clock using Google Sheets?

This video describes how you can use Apps Script (JavaScript) to add buttons and run code in Google Sheets. Follow me at https://twitter.com/geekitarian and check out http://coding4.us/ for more coding tutorials! Spreadsheet: https://docs.google.com/spreadsheets/d/1ixdqHD378UAq944AI-rH6Cr2kZPy_Vk3MO-O51ujf-k/edit?usp=sharing Code: https://script.google.com/d/1Ws5rrNb6ZHYZnCc0ZQVKhFv95aLXvfYk7vvpf4OJoZFHnUzPc-jqi_bf/edit?usp=sharing