问题描述
我想使用greasemonkey从Last.fm中抓取wiki数据（这不适用于他们的REST api）。我可以使用GM_xmlhttpRequest（）获取页面，并且它正常返回。
I want to use greasemonkey to scrape wiki data from Last.fm (this is not possible with their REST api). I can grab the page fine with GM_xmlhttpRequest(), and it is returning properly.
我不想使用DOM处理器来处理整个页面，因为我只想要一个小块，所以我正在使用正则表达式。
I do not want to use a DOM processor to process the whole page, since I only want a small chunk, so I'm using regular expressions.
维基数据在页面中如下：
The wiki data is in the page like:
<div id="wiki">
description
description
...
</div>
所以我写道：
/\<div id="wiki"\>(.+)\<\/div\>/m.exec(data)[1];
当我在错误控制台中测试它时（多行被压平成一行，它的工作原理） ，但在页面上它失败并说
When I test this in error console (where the multiple lines are flattened into a single line, it works, but on the page it fails and says
Error: /\<div id="wiki"\>(.+)\<\/div\>/m.exec(data) is null
Source File: file:///home/jeff/.mozilla/firefox/x4su9596.default/extensions/%7Be4a8a97b-f2ed-450b-b12d-ee082ba24781%7D/components/greasemonkey.js
Line: 357
我猜多线模式不会让dor匹配新线，这就是我所期望的。我如何让它匹配包括换行符在内的任何字符？
I am guessing that multiline mode does not make dor match new lines, which is what I expected. How do I make it match any character including line breaks?
推荐答案
这个点与javascript中的换行符不匹配 - 这是js正则表达式的怪癖。
The dot doesn't match newlines in javascript -- a quirk of js's regex flavor.
[^] 应该工作（例如除了绝对没有的东西）
[^] should work instead (e.g. "Everything except absolutely nothing")
这篇关于匹配多行模式的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！