如何innerHTML的pre标签内容

Question

Hi I have a FTP site on my browser like ftp://ftp.bom.gov.au/anon/gen/clim_data/IDCKWCDEA0/tables/stations_db.txt 嗨，我的浏览器上有一个FTP站点，例如ftp://ftp.bom.gov.au/anon/gen/clim_data/IDCKWCDEA0/tables/stations_db.txt

I am trying to get the text inside the pre tag using document.getElementsByTagName('pre').innerHTML it is returning udefined. 我正在尝试使用document.getElementsByTagName（'pre'）。innerHTML获取pre标签内的文本，它正在返回udefined。 Is someone can tell me why I cannot get the content of the 有人可以告诉我为什么我无法获取内容吗

`<html><head><link rel="alternate stylesheet" type="text/css" href="resource://gre-resources/plaintext.css" title="Wrap Long Lines"></head><body><pre>015590  NT  15B   ALICE SPRINGS AIRPORT                    19400101..      -23.7951 133.889   
014272  NT  14GA  BATCHELOR AIRPORT                        19920813..      -13.0545 131.0252  
014723  NT  14DE  BORROLOOLA AIRPORT                       19871107..      -16.0755 136.3041  
014954  NT  14GA  BRADSHAW                                 19980529..      -14.9408 130.8092  
014627  NT  14DE  BULMAN                                   20021010..      -13.6714 134.3414  
014909  NT  14GA  CENTRAL ARNHEM PLATEAU                   20030731..      -13.3275 133.0861  
014703  NT  14DE  CENTRE ISLAND                            19680101..      
  </pre>
 </body>
</html>`

Answer 1

document.getElementsByTagName returns an array, not a single element. document.getElementsByTagName返回一个数组，而不是单个元素。 You need to specify which element of the fetched elements you want to modify. 您需要在获取的元素中指定要修改的元素。 Try with 试试看

document.getElementsByTagName('pre')[0].innerHTML

Alternatively, a better solution would be to give that pre an id, so that you can target it precisely (because it might happen, that the pre won't be the first element fetched as I assumed by using [0] ) 或者，更好的解决方案是给该pre一个id，以便您可以精确地定位它（因为它可能发生，所以pre不会是我假设使用[0]获取的第一个元素）

document.getElementById('pre-element').innerHTML

如何innerHTML的pre标签内容

问题描述

1 个解决方案

解决方案1
1 已采纳 2015-04-20 08:29:23

如何innerHTML的pre标签内容

问题描述

1 个解决方案

解决方案1 1 已采纳 2015-04-20 08:29:23

解决方案1
1 已采纳 2015-04-20 08:29:23