title: React Checkbox onCheck get key value
body: <p>I am currently working on a website I am building with React, and I am not able to get the Checkbox key value from the onChange event. This is what my code looks like: </p>
  
  <pre><code>handleChange = (e) =&gt; {
      console.log('it works');
      console.log(e.target.key);
  }
  </code></pre>
  
  <p>And my Checkbox code:</p>
  
  <pre><code>&lt;Table.Cell&gt;&lt;Checkbox key={singleNews.key} name="myCheckBox1" onChange={this.handleChange}/&gt;&lt;/Table.Cell&gt;
  </code></pre>
  
  <p>It simply prints out 'it works', and 'undefined'. I have also used 'this.handleChange = this.handleChange.bind(this) in my constructor. Could anyone please help me find out what the error might be? For the record; I am currently using the Semantic UI React framework - could this be the problem?</p>
  
  <p>Thanks in advance.</p>