我该如何使用？在Regex中使用Javascript [英] How Do I Use ? In Regex In Javascript

问题描述

Hi.

I have string "? string:45dea2c1-70a5-4d79-8e67-03859965d58d ?" like this. I would like to get guid. How can i do

<pre lang="Javascript">
 var pattern = \? string:([a-zA-Z0-9_]) \?
 var value = "? string:45dea2c1-70a5-4d79-8e67-03859965d58d ?"
 var res = value.match(pattern)
</pre>

doesnot work

推荐答案

A正则表达式应该在正斜杠内，用反斜杠来转义特殊字符，如问号：

A regex should be inside forward slashes, with backslashes to escape special characters like the question marks:

var pattern = /\? string:([a-zA-Z0-9-]+) \?/;

我用连字符（ - ）替换了下划线（_）匹配GUID内部，并在末尾添加+以匹配至少一个字符。 value.match（pattern）将返回一个包含完整字符串和GUID的数组。

I've replaced the underscore (_) with a hyphen (-) to match that inside the GUID, and added the "+" at the end to match at least one character. value.match(pattern) will return an array containing the full string and the GUID.

这篇关于我该如何使用？在Regex中使用Javascript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IT屋！