正则表达式需求：提取文本中的CR-000000格式编号

Hey there, let's fix that regex issue you're having. Your original pattern didn't work because you used a character class [CR-] which matches individual characters (C, R, or -) instead of the literal sequence CR- you need. Here's the correct approach:

The right regex to capture all your CR- style IDs is:

CR-\d+

Let's break this down: #

• CR-: This matches the exact literal sequence "CR-" (no more mixing up characters with a class!)
• \d+: This grabs one or more digits, so it works for any length of numeric suffix (like the 7-digit IDs in your example)

If you know the numeric part will always be exactly 7 digits (like your sample), you can tighten it up to be more precise:

CR-\d{7}

How to get all matches: #

Here's how to use this in common scenarios:

Python:

import re

text = "The change Request has been created for the location below. CR-0001083 Click this link to access the Change Request Change Request ID : CR-0001086 Property ID: CK1014"
matches = re.findall(r'CR-\d+', text)
print(' '.join(matches))  # Outputs: CR-0001083 CR-0001086

JavaScript:

const text = "The change Request has been created for the location below. CR-0001083 Click this link to access the Change Request Change Request ID : CR-0001086 Property ID: CK1014";
const matches = text.match(/CR-\d+/g);
console.log(matches.join(' ')); // Outputs: CR-0001083 CR-0001086

Command line (grep):

Use the -o flag to output only the matched parts:

grep -o "CR-\d+" your_file.txt

This will pull out every instance of your CR- IDs, ignoring unrelated content like the Property ID CK1014.

内容的提问来源于stack exchange，提问作者Danil Tk