title: Programmatically update Google Spreadsheet with JavaScript?
body: <p>Is it possible to update a Google Spreadsheet using JavaScript from a web page?</p>
  
  <p>Scenario:</p>
  
  <p>1) User lands on web page</p>
  
  <p>2) JS script executes, modifying Google Spreadsheet</p>
  
  <p>How can this be done?</p>