• 删除键

    删除键

    可以使用Map.delete和Map.deleteIn方法从Maps中删除键。

    1. let movie = Immutable.fromJS({
    2.     name: 'Star Wars',
    3.     episode: 7,
    4.     actors: [
    5.         { name: 'Daisy Ridley', character: 'Rey'},
    6.         { name: 'Harrison Ford', character: 'Han Solo' }
    7.     ],
    8.     mpaa: {
    9.         rating: 'PG-13',
    10.         reason: 'sci-fi action violence'
    11.     }
    12. });
    14. movie = movie.delete('mpaa');
    16. console.log(movie.toObject());
    18. /* writes
    19. { name: 'Star Wars',
    20.   episode: 7,
    21.   actors: List [ Map { "name": "Daisy Ridley", "character": "Rey" }, Map { "name": "Harrison Ford", "character": "Han Solo" } ] }
    22. */