title: How to get result of console.trace() as string in javascript with chrome or firefox?
body: <p><code>console.trace()</code> outputs its result on console.<br>
  I want to get the results as string and save them to a file.<br>
  <br>
  I don't define names for functions and I also can not get their names with <code>callee.caller.name</code>.<br></p>