I want to access a particular property of a div where a number of div is stored as as an array.

 ans[i] = (
  <>
    <div
      className="gantt1"
      key={arrivalTime[i]}
      style={{
        background: getColor(i),
        color: `white`,
        width: getWidth(i) + `%`,
      }}
    >
      P{i}
    </div>

    <div className="time_container">
      <div className="gantt_time">
        <div className="timeDisp">{calcualteBurst(i)}ms</div>
      </div>
    </div>
  </>
);

I want to change the value of <div className='timeDisp'>{calcualteBurst(i)}ms this later. So how can I access this particular property and modify it later in React?