Shuffle Song List in Javascript in O(n)

shuffleSongList.js

const shuffleSongs = (songList) => {
    let index = Date.now() % songList.length
    let list = []
    for (var i = 0; i < songList.length/2; i++) {

        if (index + i < songList.length) {
            list.push(songList[index + i])
        } else {
            break;
        }
        if (i === 0) continue;
        if (index - i >= 0) {
            list.push(songList[index - i])
        } else {
            break;
        }
    }
    for (var j = index + i + 1; j < songList.length; j++) {
        list.push(songList[j])
    }
    for (var j = index - i; j >= 0; j--) {
        list.push(songList[j])
    }
    return list;
}