title: React keys with string and index
body: <p>As per React docs, they are not recommending to use the key as an index. but is there any issue with using the index and a string value. like below one,</p>
  
  <pre><code>
  transactionDetail.map((item,index) =&gt; &lt;div key={`transaction-{index}`}&gt;{trName}&lt;/div&gt;)
  </code></pre>
  
  <p>is there any issue with using like this?</p>