title: How to get the value of input in Material-UI
body: <p>in I am using Material-UI in React.</p>
  <pre><code>render(){return (
      &lt;input type=&quot;range&quot; min=&quot;0&quot; max=&quot;100&quot; value=&quot;100&quot; 
      onChange={this.handleMasterVolume} class=&quot;master-gain form-control&quot; id=&quot;master-gain&quot;/&gt;);
  }
  handleMasterVolume(){
      $(this).val();// if jquery I can get the value here.
      console.log(value);
  }
  </code></pre>
  <p>I want to get the input value in the passed function.</p>
  <p>If jquery I can use <code>$(this)</code> but in Material-UI????</p>