How to display an array as a single column in a table in react/js

Question

I'm trying to validate null values for required columns in an excel sheet and trying to display the result as a table with columns as - row number, null value column names.

Since it is possible for many columns in a row to have null values, I'm storing those columns as an array.

While displaying it in a table, I'm not able to get the comma delimiter in a element.

Any advice to how to display an array with comma delimeters like [a,b,c,--] in a single column abc in a table ?

Presenting a sample code base 

export default function App() {
 const names = ["a", "b","c"];
  return (
    <div className="App">
      <table>
        <thead>
          <th>Names</th>
        </thead>
        <tbody>
          <td>{names}</td>
        </tbody>
      </table>
    </div>
  );
}

This is giving output as

Names
abc

Expecting output as

Names
a,b,c

I recommend you take a look at an answer I have to a similar question: How do I extract an object(array) from an array of objects? — HoldOffHunger
– HoldOffHunger, Commented May 10, 2021 at 22:20
It should be fine! Change console.log(...) to return(...). Don't forget that map() must return a value. So, you'll have return(<div>{things.map((thing)=>{return (<b>{thing}</b>);}</div>)}. If that works, I'll post it as an answer. — HoldOffHunger
– HoldOffHunger, Commented May 10, 2021 at 22:42
If it is just an array with letters as strings, you can always convert the array to one string with delimiter using the Array.join(delimiter). For example in your code: <td>{names.join(',')}</td> — user15807029
– user15807029, Commented May 10, 2021 at 22:52

DecPK · Accepted Answer · 2021-05-10 23:14:08Z

0

You can join the array with delimiter in this case it should be ,;

CODESANDBOX

export default function App() {
  const names = ["a", "b", "c"];
  return (
    <div className="App">
      <table>
        <thead>
          <tr>
            <td>Names</td>
          </tr>
        </thead>
        <tbody>
          <tr>
            <td>{names.join(",")}</td>
          </tr>
        </tbody>
      </table>
    </div>
  );
}

answered May 10, 2021 at 23:14

DecPK

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