此函數(shù)在沒有 .toUpperCase 方法的情況下工作。但我想讓它與 toUpperCase 一起工作。我該怎么辦？我目前正在從 udemy 課程學(xué)習 Javascript：const notes = [    {},{    title: 'My next trip',    body: 'I would like to go to Spain'}, {    title: 'Habbits to work on',    body: 'Excercise, Eat a bit better'}, {    title: 'Office modification',    body: 'Get a new seat'}]function findNote(notes, noteTitle){    const index = notes.findIndex(function(item, index){        return item.title.toUpperCase() === noteTitle.toUpperCase()    })    return notes[index]}const note = findNote(notes, 'Office modification')console.log(note)