Here's a fun code snippet

gistfile1.js

// Go to any https://capitalbikeshare.com page
// Open up Chrome Inspector, Javascript console
// Paste in this, insert your credentials, submit

$.post(
 'https://capitalbikeshare.com/login',
 [{name:'username', value:'USERNAME'},{name:'password', value:'PASSWORD'}],
 function(data, textStatus, xhr) {
  console.log('logged in');
  $.get(
    'https://capitalbikeshare.com/member/rentals',
    function(data, textStatus, xhr) {
      console.log('rentals');
      console.log(data); 
      var d=$(data); 
    },
    'html'
  );
 },
 'html'
);