UPDATE ALL IN AN ARRAY

 TO UPDATE ALL IN AN ARRAY, WE SPREAD THE ARRAY, AND MAP INDIVIDUALLY .

let upperCase = () => {
    setTask(
      tasks.map((task) => {
        return {
          ...task,
          task: task.task.toUpperCase(),
        };
      })
    );
  };


      <button onClick={upperCase}>upper case</button>


  let upperCase = () => {
    setTask((prevTask) =>
      prevTask.map((task) => {
        return {
          ...task,
          task: task.task.toUpperCase(),
        };
      })
    );
  };

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