React get form field value in onSubmit
<p>I'm trying to understand pretty basic things but seems I'm lost trying to get form field value in onSave function. I have one field in form only <code>&lt;input name='content'&gt;</code></p>

<pre><code>_onSubmit: function(e) {
    e.preventDefault();

    var content = e.content.value;
</code></pre>

<p>but it respond in console with <code>TypeError: e.content is undefined</code></p>