Question

我正在尝试从名为episode的父节点中提取一个名为lastupdated的元素：数据 - ＆gt;剧集 - ＆gt; LASTUPDATE

如果我写道：

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

它返回长度为1的列表的项目零，但是带有lastupdated标签

如果我写道：

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

它返回null！那是为什么？

响应： textValue返回null

xml部分： TextContent也返回null。这里是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代替nodevalue。 Javascript区分大小写，并且DOM Node没有nodevalue属性。

更新：如果您想要xml节点中的文本值，还需要使用textContent。有关详细信息，请查看textContent和nodeValue个引用。

javascript xml nodevalue无效

1 个答案: