How do I set the id of an apex:pageBlockTable row?

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I’d like to be able to assign each row in a table an Id so I can easily find the row(s) later using JavaScript. I see where I can set the id of the table but I’d like to also assign an id to each row with a unique value that will make the row I want easy to find.

Answer

  <apex:page standardController="Account">
     <apex:variable value="{!1}" var="rowNum"/>

 <table>
    <apex:repeat value="{!Account.contacts}" var="item">
      <tr id="hello{!rowNum}"><td>{!item.Name}</td></tr>
     <apex:variable var="rowNum" value="{!rowNum + 1}"/>
   </apex:repeat>
  </table>
</apex:page>

Another solution using apex variable

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Attribution
Source : Link , Question Author : Robert Harper , Answer Author : Mohith Shrivastava

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