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Assuming you have a list of texts: (e.g.)

let myList = [
  'item 1',
  'item 2',
  'item 3',
  'item 4'
]

etc.

Then you can use the following:

function updateList(originalValue, newValue) {
  let index = myList.findIndex(item => item === originalValue);
  myList[index] = newValue;
}

And then invoke the function, with the intended parameters e.g.

updateList('item 2', 'item 406');

To change ‘item 2’ to ‘item 406’

you probably also want to include a check to make sure the item to change actually exists, to avoid any potential issues… such as:

function updateList(originalValue, newValue) {
  let index = myList.findIndex(item => item === originalValue);
  if (index >= 0) {
    myList[index] = newValue;
  } else {
    console.log(`Item ${originalValue} not found`);
  }
}
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