title: Call object property with variable
body: <p>This code doesn't work quite as i want to.  </p>
  
  <pre><code>var csd = {large10x10: 0}
  var nextitem = "large10x10";
  buildings.push(nextitem,"black",a);
  csd.nextitem += 1;    
  </code></pre>
  
  <p>at <code>csd.nextitem +=1</code> I want it to add 1 to csd.large10x10. How do I do that? Or what do I google to find the answer?</p>
  
  <p>Thanks</p>