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Warning: validateDOMNesting(...): <tr> cannot appear as a child of <table>

See original GitHub issue

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?

Issue Analytics

State:
Created 8 years ago
Reactions:16
Comments:12 (2 by maintainers)

Top GitHub Comments

214reactions

waldreitercommented, Dec 12, 2015

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.

9reactions

username99987commented, Dec 12, 2015

Ah makes sense. Problem solved, thanks.