matches full if condition statment eg: if(condition){ ... } else if(condition){ ... }else{...

This regex matches only when all the following are true: password must contain 1 number (0-9) password must contain 1 uppercase letters password must contain 1 lowercase letters password must contain 1 non-alpha numeric number...

This may be useful or not to test whether a given string is a valid (more or less) html color value. It matches color values such as: #123 - short hex color value #123456 - hex color value rgb(255,255,0) - rgb color value rgba(255,255,0,1.0) - rgba color value hsl(360,100%,100%) - hsl color value...

main symbols and comments are supported

Allows inserting expiry date as MM/YYYY or MM-YYYY format

Simple name matching Matches english names only, you may add international characters to list of characters.

Replace non-ending string \n by the HTML tag

Extract resource location, name and query parameters from a URL (JavaScript version)

YourLink - not found AnotherLink - found

This regex validates varying types of telephone numbers.

Credit: https://gist.github.com/FinalAngel/1876898

a mac address separated by dashes or colons.

email that accepts the plus (+) symbol

This is a JavaScript port of the URL regex from http://stackoverflow.com/a/190405/384062 that includes a bug fix and some optimization. Mathias Bynens's Regenerate was used to convert unicode escapes. Bug fix: Eliminated stray | falsely allowing querystring to contain | ...