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[英]JavaScript: Create a function defineFirstArg that accepts a function and an argument; Accept More Arguments
[英]Create a function removeFromPlaylist that accepts two arguments (the playlist object and the artist name)
創建一個 function removeFromPlaylist
,它接受兩個 arguments(播放列表 object 和藝術家姓名)。 function 的主體應該從播放列表中刪除鍵值對並返回更新的播放列表。
我無法使用以下代碼通過此測試:
function removeFromPlaylist(playlist, artistName) {
delete playlist.artistName
return playlist
}
要刪除密鑰,您必須使用方括號delete playlist[artistName]; 因為否則它會嘗試刪除“artistName”,你想刪除值為artistName的鍵。
function removeFromPlaylist(playlist, artistName) { delete playlist[artistName]; return playlist; } let playlist = { song: 'Hello', artist: "Madonna", duration: "2:34" }; console.log ( removeFromPlaylist( playlist, "artist") );
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