title: How do I get the value in TextInput when onBlur is called?
body: <p>In React Native, I want to pass the value of the <code>TextInput</code> in the <code>onBlur</code> event handler.</p>
  <pre><code>onBlur={(e) =&gt; this.validateText(e.target.value)}
  </code></pre>
  <p><code>e.target.value</code> works for plain React. But, in react-native, <code>e.target.value</code> is undefined. What is the structure of event args available in React Native?</p>