title: JavaScript Performance: Multiple variables or one object?
body: <p>this is just a simple performance question, helping me understand the javascript engine.
  for this I'm was wondering, what is faster: declaring multiple variables for certain values or using one object containing multiple values.</p>
  
  <p>example:</p>
  
  <pre><code>var x = 15;
  var y = 300;
  </code></pre>
  
  <p>vs.</p>
  
  <pre><code>var sizes = { x: 15, y: 300 };
  </code></pre>
  
  <p>this is just a very simple example, could of course differ in a real project.
  does this even matter?</p>