title: Chrome JavaScript Debugging: how to break when a value changes
body: <p>I am debugging a large JavaScript code base where, at some point, the "console" variable gets nulled when refreshing the page.</p>
  
  <p>Is there a way to set a watch on console and make JavaScript break execution when that value changes (or when a condition <code>(console == null)</code> is true)?</p>
  
  <p>I am using Chrome on Windows 7.</p>