Useful or not, from you.
react Warning: validateDOMNesting(...): <tr> cannot appear as a child of <table>

Using react and react-dom v0.14.3. Have a component which renders:

 <table style={tableStyle}>
       <tr style={rowStyle}>
           <td style={leftColumnStyle}>Battery</td>
           <td><StatsBar/></td>
        </tr>
        ...
  </table>

Getting an error message in console: Warning: validateDOMNesting(...): <tr> cannot appear as a child of <table>. See ProductDetails > table > tr. Add a <tbody> to your code to match the DOM tree generated by the browser.

Any ideas why?

That's a useful answer
Without any help

Just do what the warning suggests:

<table style={tableStyle}>
   <tbody>
       <tr style={rowStyle}>
           <td style={leftColumnStyle}>Battery</td>
           <td><StatsBar/></td>
        </tr>
   </tbody>
</table>

Browsers need the <tbody> tag. If it is not in your code, then the browser will automatically insert it. This will work fine on first render, but when the table gets updated, then the DOM tree is different from what React expects. This can give strange bugs, therefore React warns you to insert the <tbody>. It is a really helpful warning.

It helped. Thanks!