title: Javascript comma syntax
body: <p>Why do so many developers write commas this way?</p>
  
  <pre><code>var npm = module.exports = new EventEmitter
    , config = require("./lib/config")
    , set = require("./lib/utils/set");
  </code></pre>
  
  <p>Not this way?</p>
  
  <pre><code>var npm = module.exports = new EventEmitter,
      config = require("./lib/config"),
      set = require("./lib/utils/set");
  </code></pre>