All digit must be number

Nth match

Validate a 10-digit US Phone Number

Validate an ivoice number with the last two digit as last 2 year digit

validate_invoiceid_with_yy

Takes a 13 digit non-dashed Nato Stock Number and uses the Substitution to add the dashes in

Nato Stock Number (Add dashes)

var pattern='/^[0-9][0-9]{0,6}$/'; /* int match 9 digit */
/**********************************************
*
*  	^ starting point
*	1st [0-9] number should be start between 0 to 9
*	2nd [0-9] number should be end between 0 to 9 
*	3nd {0-6} number length should be exact 6 digit
*	$ its show the end of string or data 
*
************************************************/

regex int

Allows Number: Currency amount US (cents optional) 
   Can use US-style 123,456.78 notation 
   Optional thousands separators; optional two-digit fraction; commas; dollar sign

Currency amount validation with sign (cents optional)

Pattern for container numbers.
Without the digit verification of course.

Maritime Container Number Pattern

Match one or two digit hex values separated by a comma.

All digit must be number