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https://github.com/jeffreyshen19/RegEx-Snippets
Organized list of useful RegEx snippets
https://github.com/jeffreyshen19/RegEx-Snippets
list regex snippets
Last synced: 2 months ago
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Organized list of useful RegEx snippets
- Host: GitHub
- URL: https://github.com/jeffreyshen19/RegEx-Snippets
- Owner: jeffreyshen19
- License: cc0-1.0
- Created: 2017-12-30T02:56:00.000Z (about 7 years ago)
- Default Branch: main
- Last Pushed: 2020-06-10T17:18:41.000Z (over 4 years ago)
- Last Synced: 2024-08-01T19:54:16.577Z (5 months ago)
- Topics: list, regex, snippets
- Homepage: https://jeffreyshen19.github.io/RegEx-Snippets/
- Size: 33.2 KB
- Stars: 119
- Watchers: 6
- Forks: 7
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
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- project-awesome - jeffreyshen19/RegEx-Snippets - Organized list of useful RegEx snippets (Others)
README
# RegEx Snippets
Useful RegEx snippets that are categorized and searchable (see below)
* **Contributions are welcome**! Please read our CONTRIBUTING, CODE_OF_CONDUCT, and LICENSE files to get started. RegEx snippet ideas are located in IDEAS.md.
* **Errors?** Submit an issue, or even better, submit a PR fixing the issue!
* RegEx snippets are either user-created, or picked from across the web.
## Table of Contents
* [Dates](#dates)
* Match mm/dd/yyyy
* Match mon/dd/yyyy
* Match month names
* [Files](#files)
* Match image filenames
* [Miscellaneous](#miscellaneous)
* Match city, state abbreviation
* Match credit cards
* Match email addresses
* Match US Phone Numbers
* Match valid hexadecimal colors
* Match social security number
* Match ZIP Codes (5 digit and 9 digit)
* [Numbers](#numbers)
* Match dollar signs and comma separators in a number
* Matching leading zeroes
* [Strings](#strings)
* Match new lines
* Match strong passwords (At least one lower case, one upper case, one number, one special character, and 10 characters long)
* Match usernames (alphanumeric string of a certain length)
* [Web](#web)
* Extract URL from an anchor tag
* Match all content within a specific HTML tag
* Match all HTML tags
* Match IPv4 Addresses
* Match Twitter usernames
* Match URLs
* Match URL safe strings
* Match URL slugs
## Snippets
### Dates
**Match mm/dd/yyyy**
Accepts mm/dd/yyyy, mm-dd-yyyy, or mm.dd.yyyy and doesn't care about leading zeroes.
```
/^[0-3]?[0-9](\/|\.|-)[0-3]?[0-9](\/|\.|-)[1-9]\d{3}$/gi
```
**Match mon/dd/yyyy**
Accepts mon/dd/yyyy, mon-dd-yyyy, or mon.dd.yyyy and doesn't care about leading zeroes or case. For example, will match "jan/10/2017"
```
/^(jan|feb|mar|apr|may|jun|jul|aug|sept?|oct|nov|dec)(\/|\.|-)[0-3]?[0-9](\/|\.|-)[1-9]\d{3}$/gi
```
**Match month names**
Accepts month names (both full and abbreviated), and doesn't care about case. For example, it will match "January" and "jan".
```
/^(jan(uary)?|feb(ruary)?|(mar)?ch|(apr)?il|may|(jun)?e|(jul)?y|(aug)?ust|sep(tember)?|sept|(oct)?ober|(nov)?ember|(dec)?ember)$/i;
```
---
### Files
**Match image filenames**
```
/^.+\.(jpg|jpeg|png|gif|bmp|svg)$/gi
```
---
### Miscellaneous
**Match city, state abbreviation** (Matches "Los Angeles, CA" for example)
```
/[a-zA-Z\s]*, [A-Z][A-Z]/
```
**Match credit cards** (Make sure to strip the string of all commas, spaces, etc. before matching)
Amex:
```
/^3[47][0-9]{13}$/
```
Discover:
```
/^65[4-9][0-9]{13}|64[4-9][0-9]{13}|6011[0-9]{12}|(622(?:12[6-9]|1[3-9][0-9]|[2-8][0-9][0-9]|9[01][0-9]|92[0-5])[0-9]{10})$/
```
Mastercard:
```
/^5[1-5][0-9]{14}$/
```
Visa:
```
/^4[0-9]{12}(?:[0-9]{3})?$/
```
Visa Mastercard:
```
/^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14})$/
```
**Match email addresses**
```
/^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/i
```
**Match US Phone Numbers**
Matches ###-###-####, (###) ###-####, and ### ### ####
```
/^(\+\d{1,2}\s)?\(?\d{3}\)?[\s.-]\d{3}[\s.-]\d{4}$/
```
**Match valid hexadecimal colors**
```
/^#([0-9a-f]{3}$|[0-9a-f]{6}$)/i
```
**Match social security number**
Matches ###-##-####
```
/^[0-9]\{3\}-[0-9]\{2\}-[0-9]\{4\}$/
```
**Match ZIP Codes (5 digit and 9 digit)**
```
/^[0-9]{5}(-[0-9]{4})?$/
```
---
**Match dollar signs and comma separators in a number**:
This can be used to strip a number string into an actual number.
```
/(\$|\,)/g
```
**Matching leading zeroes**:
```
/^0{2,}/g
```
---
**Match new lines**
```
/[\r\n]|$/g
```
**Match strong passwords (At least one lower case, one upper case, one number, one special character, and 10 characters long)**:
```
/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[$@$!%*?&_])[A-Za-z\d$@$!%*?&_]{10,}$/
```
**Match usernames (alphanumeric string of a certain length)**:
Replace MIN_CHARS and MAX_CHARS with the minimum and maximum length of the username, respectively.
```
/^[a-z0-9]{MIN_CHARS,MAX_CHARS}$/i
```
---
**Extract URL from an anchor tag**
For example, if `str` = "<a href = 'https://www.google.com' ></a>", this RegEx would return "https://www.google.com".
```
str.match(/]*?\s+)?href ?= ?["']([^'^"]*)["'][^>]*>/i)[1]
```
**Match all content within a specific HTML tag** (*Replace "p" with whatever tag you want*)
```
/
(\n|.)*<\/p>/gi
```
**Match HTML tags**
```
/<\/?[^>]+>/g
```
**Match IPv4 Addresses**
```
/^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/
```
**Match Twitter Usernames**
```
/^@?(\w){1,15}$/
```
**Match URLs**
```
/((([A-Za-z]{3,9}:(?:\/\/)?)(?:[\-;:&=\+\$,\w]+@)?[A-Za-z0-9\.\-]+|(?:www\.|[\-;:&=\+\$,\w]+@)[A-Za-z0-9\.\-]+)((?:\/[\+~%\/\.\w\-_]*)?\??(?:[\-\+=&;%@\.\w_]*)#?(?:[\.\!\/\\\w]*))?)/
```
**Match URL safe strings**
```
/^[a-zA-Z0-9_-]*$/
```
**Match URL Slug**
```
/^[a-z0-9-_]+$/i
```