What is the regex for doi number?

The regex pattern for doi number is `^10\.\d{4,9}\/[-._;()/:a-zA-Z0-9]+$`. This pattern validates digital object identifier (doi) starting with 10..

How do I use this regex in JavaScript?

In JavaScript, create the regex with `const regex = /^10\.\d{4,9}\\/[-._;()\/:a-zA-Z0-9]+$/;` and test with `regex.test(yourValue)`. It returns `true` if the value matches.

How do I use this regex in Python?

In Python, use `import re; re.match(r'^10\.\d{4,9}\/[-._;()/:a-zA-Z0-9]+$', value)`. The raw string prefix (`r`) prevents Python from interpreting backslashes as escape characters.

Is this regex case-sensitive?

By default, yes. To make it case-insensitive, add the `i` flag in JavaScript (`/^10\.\d{4,9}\/[-._;()/:a-zA-Z0-9]+$/i`) or use `re.IGNORECASE` in Python.

Regex for DOI Number

Regex Pattern

^10\.\d{4,9}\/[-._;()/:a-zA-Z0-9]+$

Digital Object Identifier (DOI) starting with 10.

Quick Answer

The regex pattern for doi number is `^10\.\d{4,9}\/[-._;()/:a-zA-Z0-9]+$`. Digital Object Identifier (DOI) starting with 10.. This works in JavaScript, Python, Ruby, PHP, Java, and most regex engines that support PCRE syntax.

Test Examples

Input	Result
10.1000/xyz123	✓ Matches
10.1038/nphys1170	✓ Matches
10.1016/j.cell.2009.01.001	✓ Matches
11.1000/xyz	✗ No match
10.12/x	✗ No match
not-a-doi	✗ No match

Code Examples

javascript

const regex = /^10\.\d{4,9}\\/[-._;()\/:a-zA-Z0-9]+$/;
const isValid = regex.test(value);

python

import re
pattern = r'^10\.\d{4,9}\/[-._;()/:a-zA-Z0-9]+$'
if re.match(pattern, value):
    print("valid")

ruby

pattern = /^10\.\d{4,9}\/[-._;()/:a-zA-Z0-9]+$/
if value =~ pattern
  puts "valid"
end

php

if (preg_match('/^10\.\d{4,9}\\/[-._;()\/:a-zA-Z0-9]+$/', $value)) {
    echo "valid";
}

java

String pattern = "^10\\.\\d{4,9}\\/[-._;()/:a-zA-Z0-9]+$";
boolean isValid = value.matches(pattern);

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