title: React onClick event
body: <p>I'm missing something.  Here's a very simple hello world, the goal is to just fire an alert event onClick.  The event does fire when the page loads, but not when I click the button.  I appreciate the help.   Here's a jsFiddle to make it easier to see: <a href="https://jsfiddle.net/ihistand/4yuagqz8/3/" rel="noreferrer">jsFiddle</a></p>
  
  <pre><code>var Hello = React.createClass({
  render: function() {
      return &lt;button onClick={alert("Hello World!")}&gt;
                 Click Me
              &lt;/button&gt;;
  }
  React.render(&lt;Hello /&gt;, document.getElementById('container'));
  </code></pre>