Question

I have not yet mastered the syntax of regexp and I need a regular expression for the keyup event of a textbox that can validate this abstract pattern:

d1d2/d3d4

d1: A number either 0 or 1

d2: A number

(d1d2) form a month

the ‘/’ is the separator

d3: A number

d4: A number

(d3d4) form a year with 2 digits i.e. 12 -> 2012

Can any one make a smart regexp for that validation?

Thanks

Answer 1

You can write:

/^(?:0[1-9]|1[012])\/[0-9][0-9]$/