javascript xml节点值不工作

Question

我正在尝试从名为 episode 的父节点中提取名为 lastupdated 的元素: 数据 -> 剧集 -> 最后更新

如果我写:

episodeList = xmlDoc.getElementsByTagName("Episode");
console.log(episodeList[1].getElementsByTagName("lastupdated")[0])

它返回长度为 1 的列表中的项目零，但带有最后更新的标签

如果我写:

console.log(episodeList[1].getElementsByTagName("lastupdated")[0].nodeValue)

它返回空! 这是为什么？

回应: textValue 返回 null

xml部分: TextContent 也返回 null。这是 xml:

<Data>
<Series>
<id>75760</id>
<Actors>
|Josh Radnor|Cobie Smulders|Neil Patrick Harris|Jason Segel|Alyson Hannigan|Bob Saget|
</Actors>
<Airs_DayOfWeek>Monday</Airs_DayOfWeek>
<Airs_Time>8:00 PM</Airs_Time>
<ContentRating>TV-PG</ContentRating>
<FirstAired>2005-09-19</FirstAired>
<Genre>|Comedy|</Genre>
<IMDB_ID>tt0460649</IMDB_ID>
<Language>en</Language>
<Network>CBS</Network>
<NetworkID/>
<Overview>
How I Met Your Mother is a comedy about Ted and how he fell in love. It all started when Ted's best friend, Marshall, dropped the bombshell that he was going to propose to his longtime girlfriend, Lily, a kindergarten teacher. At that moment, Ted realized that he had better get a move on if he, too, hopes to find true love. Helping him in his quest is his friend Barney, a confirmed bachelor with endless, sometimes outrageous opinions, a penchant for suits and a foolproof way to meet women. When Ted meets Robin, he's sure it's love at first sight, but destiny has something else in store.
</Overview>
<Rating>9.2</Rating>
<RatingCount>381</RatingCount>
<Runtime>30</Runtime>
<SeriesID>33700</SeriesID>
<SeriesName>How I Met Your Mother</SeriesName>
<Status>Continuing</Status>
<added/>
<addedBy/>
<banner>graphical/75760-g25.jpg</banner>
<fanart>fanart/original/75760-45.jpg</fanart>
<lastupdated>1333146863</lastupdated>
<poster>posters/75760-12.jpg</poster>
<zap2it_id>EP00753796</zap2it_id>
</Series>
<Episode>
<id>1159571</id>
<Combined_episodenumber>1</Combined_episodenumber>
<Combined_season>0</Combined_season>
<DVD_chapter/>
<DVD_discid/>
<DVD_episodenumber/>
<DVD_season/>
<Director/>
<EpImgFlag>1</EpImgFlag>
<EpisodeName>Robin Sparkles Music Video - Let's Go to the Mall</EpisodeName>
<EpisodeNumber>1</EpisodeNumber>
<FirstAired>2006-11-20</FirstAired>
<GuestStars/>
<IMDB_ID/>
<Language>en</Language>
<Overview/>
<ProductionCode/>
<Rating>4.0</Rating>
<RatingCount>1</RatingCount>
<SeasonNumber>0</SeasonNumber>
<Writer/>
<absolute_number/>
<airsafter_season/>
<airsbefore_episode>10</airsbefore_episode>
<airsbefore_season>2</airsbefore_season>
<filename>episodes/75760/1159571.jpg</filename>
<lastupdated>1275339740</lastupdated>
<seasonid>23219</seasonid>
<seriesid>75760</seriesid>
</Episode>

Answer 1

您需要使用 nodeValue 而不是 nodevalue。 Javascript 区分大小写，并且 DOM Node 没有 nodevalue 属性.

更新:如果您希望 xml 节点中的文本值，您还需要使用 textContent。 更多信息请查看 textContent和 nodeValue引用资料。